All
Search
Images
Videos
Shorts
Maps
News
More
Shopping
Flights
Travel
Notebook
Report an inappropriate content
Please select one of the options below.
Not Relevant
Offensive
Adult
Child Sexual Abuse
Top suggestions for Refurbished Laptops Amazon
Amazon Laptops
Cheap
Amazon Laptops
On Sale
Amazon
HP Laptop
Refurbished
Mac Laptops
Cheapest
Laptop Amazon
Dell Computers
Amazon Laptops
Amazon Laptops
for Sale
Used Laptop
Computers
Refurb
Laptops
Buy Used
Laptops
Refurbished
Desktops
Used Apple
Laptops
Affordable
Laptops
Cheap Laptops
at Best Buy
Length
All
Short (less than 5 minutes)
Medium (5-20 minutes)
Long (more than 20 minutes)
Date
All
Past 24 hours
Past week
Past month
Past year
Resolution
All
Lower than 360p
360p or higher
480p or higher
720p or higher
1080p or higher
Source
All
Dailymotion
Vimeo
Metacafe
Hulu
VEVO
Myspace
MTV
CBS
Fox
CNN
MSN
Price
All
Free
Paid
Clear filters
SafeSearch:
Moderate
Strict
Moderate (default)
Off
Filter
Amazon Laptops
Cheap
Amazon Laptops
On Sale
Amazon
HP Laptop
Refurbished
Mac Laptops
Cheapest
Laptop Amazon
Dell Computers
Amazon Laptops
Amazon Laptops
for Sale
Used Laptop
Computers
Refurb
Laptops
Buy Used
Laptops
Refurbished
Desktops
Used Apple
Laptops
Affordable
Laptops
Cheap Laptops
at Best Buy
Shop refurbished laptops amazon
Sponsored
$329.99
Dell Latitude 5520 15.6" Laptop, i5 1145G7 2.6Ghz, 16GB DDR4, 256GB Nvme SSD, HDMI, Thunderbolt 3, Webcam, Windows 11 Pro (Renewed)
Amazon.com
4
Free shipping
$329.99
Dell Latitude 5520 15.6" Laptop, i5 1145G7 2.6Ghz, 16GB DDR4, 256GB Nvme SSD, HDMI, Thunderbolt 3, Webcam, Windows 11 Pro (Renewed)
Amazon.com
4
$176.04
$1,199.00
Macbook Air 13-Inch (2015) - Core i5 - 4GB - SSD 256GB
BackMarket US
85% off
$176.04
$1,199.00
Macbook Air 13-Inch (2015) - Core i5 - 4GB - SSD 256GB
BackMarket US
$329.99
$499.99
Dell 15 Laptop - W/ Windows 11 OS - 15.6" HD Screen - 8 GB - 512G - Usedc15255hbtshqzk
dell_Admedia
Free shipping
34% off
$329.99
$499.99
Dell 15 Laptop - W/ Windows 11 OS - 15.6" HD Screen - 8 GB - 512G - Usedc15255hbtshqzk
dell_Admedia
Free shipping
$239.00
$820.00
Macbook Pro Retina 13-Inch (2017) - Core i7 - 16GB - SSD 128GB
BackMarket US
70% off
$239.00
$820.00
Macbook Pro Retina 13-Inch (2017) - Core i7 - 16GB - SSD 128GB
BackMarket US
$697.99
Dell Latitude 5420 Rugged Laptop, 14 Inch FHD (1920 X 1080), Intel Core I5-8350U, 32GB RAM, 512GB SSD, Windows 11 Pro (Renewed)
Amazon.com
Free shipping
$697.99
Dell Latitude 5420 Rugged Laptop, 14 Inch FHD (1920 X 1080), Intel Core I5-8350U, 32GB RAM, 512GB SSD, Windows 11 Pro (Renewed)
Amazon.com
Free shipping
$225.60
Dell Latitude 5400 14" Touchscreen Laptop, Intel Core I5, 16GB RAM, 256GB SSD, Win11 Pro (Renewed)
Amazon.com
22
Free shipping
$225.60
Dell Latitude 5400 14" Touchscreen Laptop, Intel Core I5, 16GB RAM, 256GB SSD, Win11 Pro (Renewed)
Amazon.com
22
$438.05
$2,299.00
Macbook Pro Retina 16-Inch (2019) - Core i7 - 16GB - SSD 512GB
BackMarket US
21
80% off
$438.05
$2,299.00
Macbook Pro Retina 16-Inch (2019) - Core i7 - 16GB - SSD 512GB
BackMarket US
21
$378.00
$1,199.00
Macbook Air Retina 13-Inch (2018) - Core i5 - 8GB - SSD 128GB
BackMarket US
20
68% off
$378.00
$1,199.00
Macbook Air Retina 13-Inch (2018) - Core i5 - 8GB - SSD 128GB
BackMarket US
20
$549.99
$869.99
Dell 16 Laptop - W/ Windows 11 OS & Intel Core 5 - 16 GB - 512G - Usedc16250hbtshwvs
dell_Admedia
Free shipping
36% off
$549.99
$869.99
Dell 16 Laptop - W/ Windows 11 OS & Intel Core 5 - 16 GB - 512G - Usedc16250hbtshwvs
dell_Admedia
Free shipping
$195.60
Dell Latitude 7480 14in FHD I5-6300U 16GB 256GB SSD Webcam Backlit Keyboard Black (Renewed)
Amazon.com
730
Free shipping
$195.60
Dell Latitude 7480 14in FHD I5-6300U 16GB 256GB SSD Webcam Backlit Keyboard Black (Renewed)
Amazon.com
730
$799.95
Dell Precision M7730 Laptop, 17.3Inch FHD (1920X1080), Intel Xeon E-2176M, 64GB (4X16gb) RAM, 1TB SSD, NVIDIA Quadro P3200, Windows 10 Pro (Renewed)
Amazon.com
Free shipping
$799.95
Dell Precision M7730 Laptop, 17.3Inch FHD (1920X1080), Intel Xeon E-2176M, 64GB (4X16gb) RAM, 1TB SSD, NVIDIA Quadro P3200, Windows 10 Pro (Renewed)
Amazon.com
Free shipping
$124.00
$359.00
Macbook Air 13-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
35
65% off
$124.00
$359.00
Macbook Air 13-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
35
$289.98
HP 14 Inch Laptop, HD Display, Intel Core I3-N305, 8 GB RAM, 256 GB SSD, Intel UHD Graphics, Windows 11 Home In S Mode, Natural Silver, 14-Ep0299nr
Amazon.com
138
Free shipping
$289.98
HP 14 Inch Laptop, HD Display, Intel Core I3-N305, 8 GB RAM, 256 GB SSD, Intel UHD Graphics, Windows 11 Home In S Mode, Natural Silver, 14-Ep0299nr
Amazon.com
138
$599.99
$919.99
Dell 16 Laptop - W/ Windows 11 OS - 16GB - 512G - Usedc16256hbtshwdn
dell_Admedia
Free shipping
34% off
$599.99
$919.99
Dell 16 Laptop - W/ Windows 11 OS - 16GB - 512G - Usedc16256hbtshwdn
dell_Admedia
Free shipping
$369.99
HP Chromebook 15.6" Laptop For Student & Business, 15.6 Inch HD Display, 8 GB RAM, 192 GB Storage (64 GB Emmc + 128 GB Microsd), Intel Quad-Core
Amazon.com
12
Free shipping
$369.99
HP Chromebook 15.6" Laptop For Student & Business, 15.6 Inch HD Display, 8 GB RAM, 192 GB Storage (64 GB Emmc + 128 GB Microsd), Intel Quad-Core
Amazon.com
12
$306.00
$2,399.00
Macbook Pro Retina 15-Inch (2018) - Core i7 - 16GB - SSD 256GB
BackMarket US
9
87% off
$306.00
$2,399.00
Macbook Pro Retina 15-Inch (2018) - Core i7 - 16GB - SSD 256GB
BackMarket US
9
$749.99
$1,269.99
Dell 16 Plus Laptop - W/ Windows 11 OS & Intel Core Ultra 7 - 16GB - 1T - Usedb16250hbtshmgx
dell_Admedia
Free shipping
40% off
$749.99
$1,269.99
Dell 16 Plus Laptop - W/ Windows 11 OS & Intel Core Ultra 7 - 16GB - 1T - Usedb16250hbtshmgx
dell_Admedia
Free shipping
$176.00
Macbook Pro Retina 13-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
$176.00
Macbook Pro Retina 13-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
$494.99
$3,450.00
Macbook Pro Retina 16-Inch (2019) - Core i7 - 32GB - SSD 512GB
BackMarket US
21
85% off
$494.99
$3,450.00
Macbook Pro Retina 16-Inch (2019) - Core i7 - 32GB - SSD 512GB
BackMarket US
21
$414.00
$2,799.00
Macbook Pro Retina 15-Inch (2017) - Core i7 - 16GB - SSD 256GB
BackMarket US
85% off
$414.00
$2,799.00
Macbook Pro Retina 15-Inch (2017) - Core i7 - 16GB - SSD 256GB
BackMarket US
$235.00
$1,500.00
Macbook Air Retina 13-Inch (2018) - Core i5 - 8GB - SSD 128GB
BackMarket US
373
84% off
$235.00
$1,500.00
Macbook Air Retina 13-Inch (2018) - Core i5 - 8GB - SSD 128GB
BackMarket US
373
$368.31
$452.17
Dell Latitude 9420 Laptop | 14" FHD LCD | Intel Core i7 11th Gen | 16GB RAM | 512GB SSD | Backlit Keyboard | Webcam | Wifi | Windows 11 Pro | Business
Amazon.com
Free shipping
18% off
$368.31
$452.17
Dell Latitude 9420 Laptop | 14" FHD LCD | Intel Core i7 11th Gen | 16GB RAM | 512GB SSD | Backlit Keyboard | Webcam | Wifi | Windows 11 Pro | Business
Amazon.com
Free shipping
$1,099.00
$1,449.99
Dell Latitude Rugged 5430 Laptop (2022) | 14" 1920X1080 FHD | Core I5-1145G7-512GB SSD Hard Drive - 16GB RAM | 4 Cores @ 4.4 Ghz Win 11 Pro Black (
Amazon.com
2
Free shipping
24% off
$1,099.00
$1,449.99
Dell Latitude Rugged 5430 Laptop (2022) | 14" 1920X1080 FHD | Core I5-1145G7-512GB SSD Hard Drive - 16GB RAM | 4 Cores @ 4.4 Ghz Win 11 Pro Black (
Amazon.com
2
$430.00
$1,299.00
Macbook Air Retina 13-Inch (2020) - Core i5 - 16GB - SSD 256GB
BackMarket US
66% off
$430.00
$1,299.00
Macbook Air Retina 13-Inch (2020) - Core i5 - 16GB - SSD 256GB
BackMarket US
$491.00
$1,199.00
Macbook Air (2020) 13-Inch - Apple M1 8-Core And 7-Core GPU - 16GB RAM - SSD 256GB
BackMarket US
59% off
$491.00
$1,199.00
Macbook Air (2020) 13-Inch - Apple M1 8-Core And 7-Core GPU - 16GB RAM - SSD 256GB
BackMarket US
$290.00
$1,500.00
Macbook Air Retina 13-Inch (2020) - Core i3 - 8GB - SSD 128GB
BackMarket US
80% off
$290.00
$1,500.00
Macbook Air Retina 13-Inch (2020) - Core i3 - 8GB - SSD 128GB
BackMarket US
$561.25
$899.00
Macbook Air 11-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
37% off
$561.25
$899.00
Macbook Air 11-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
0:46
Facebook
Exploring Gyan
Flipkart & Amazon Refurbished Laptops in Wholesale | Starting 5999₹ Only | Exploring Gyan
Exploring Gyan. . Flipkart & Amazon Refurbished Laptops in Wholesale | Starting 5999₹ Only
2.1B views
Feb 4, 2025
Laptop Reviews
Laptop Reviews
theverge.com
7 views
Jan 23, 2024
Best budget laptop: cheap Windows models & Chromebooks | Stuff
stuff.tv
9 months ago
The Best Laptops
nytimes.com
2 months ago
Top videos
Everything You Need to Know About Refurbished Computers | Dell USA
dell.com
5 months ago
Certified Refurbished Laptops
supercomm.co.za
Oct 29, 2016
Certified Refurbished Laptops
supercomm.co.za
Oct 29, 2016
Laptop Gaming
8:20
HP Pavilion Gaming 15 Review
YouTube
MobileTechReview
796.5K views
Jan 24, 2020
2:59
Upgrading Your Laptop - CPU / Graphics / RAM / Disk
YouTube
Jarrod'sTech
1.5M views
Sep 13, 2017
9:18
External Monitor Boosts Laptop Gaming Performance!?
YouTube
Jarrod'sTech
2.5M views
Mar 18, 2020
Everything You Need to Know About Refurbished Computers | Dell USA
5 months ago
dell.com
Certified Refurbished Laptops
Oct 29, 2016
supercomm.co.za
Certified Refurbished Laptops
Oct 29, 2016
supercomm.co.za
9:28
Should You Buy A Refurbished Dell on Amazon or Build Your Own Co
…
16.6K views
Jul 26, 2021
YouTube
Craig Neidel
5:36
Amazon Refurbished Laptop Review — Pros, Cons & Real Worth
108 views
7 months ago
YouTube
Pixel Peek Mind
14:32
Amazon Renewed Laptop Unboxing - It's Shocking | Refurbished | Bes
…
91.5K views
Oct 28, 2023
YouTube
Gupta Information Systems
Certified Refurbished Laptops
Jan 1, 2009
supercomm.co.za
8:30
🔥 Renewed HP ProBook 640 G8 Review || Amazon Refurbished La
…
13.5K views
Jun 20, 2024
YouTube
Royal Tech Reviews
9:27
Start Rs 13,999/- 🔥 Best Refurbished Laptop On Amazon 🔥 New Price De
…
13.7K views
Dec 19, 2024
YouTube
PC Tech Talk
12:21
🔥 Dell latitude 3480 Reviews || Best Refurbished Laptop 2024 || amazo
…
4.4K views
Jan 5, 2024
YouTube
Royal Tech Reviews
8:08
AMAZON RENEWED (REFURBISHED) LAPTOPS REVIEW
6.6K views
Dec 8, 2023
YouTube
Kanwar Anand
Amazon Refurbished/Renewed laptop first experience. Refurbishe
…
292.6K views
Dec 6, 2021
YouTube
Technical Divyang
5:55
(Renewed) DELL LATITUDE E5470 Laptop Review | Amazon Renewe
…
34K views
Jul 18, 2023
YouTube
Raj Tech Guide
9:21
Refurbished Laptop after 6 Months warranty | Renewed Laptop Amaz
…
134.5K views
Nov 24, 2023
YouTube
Online Zugaad
7:01
REFURBISHED LENOVO THINKPAD LAPTOP REVIEW | Amazon Refur
…
81.4K views
Oct 4, 2023
YouTube
Raj Tech Guide
0:47
What is Amazon Renewed Refurbished? How to join the Ama
…
2.6K views
Sep 20, 2021
YouTube
SageMailer
What Is An Amazon Renewed Laptop Like?
64.2K views
Mar 22, 2020
YouTube
Peter von Panda
8:24
Refurbished Dell Latitude Laptop Review | Amazon Refurbished Lap
…
4.6K views
Nov 21, 2024
YouTube
Raj Tech Guide
4:08
Amazon Renewed Laptop Unboxing
4.1K views
Dec 2, 2021
YouTube
AICvideo
5:24
How To Check Refurbished Laptop | Reconditioned Laptops
21.1K views
Jul 30, 2022
YouTube
Tech Facts BD
11:51
I Bought Refurbished Laptop From Amazon🔥So You Don’t Have To! Ga
…
478.3K views
Nov 24, 2024
YouTube
Adi 4 u
3:11
Brand New Or Refurbished Laptop | How to Tell
26K views
Feb 27, 2021
YouTube
Manuel TheITGuy
9:13
✅ Top 5:💻 BEST Refurbished Laptops In 2024 [ Refurbished Lap
…
24.4K views
Apr 21, 2022
YouTube
Best Product Review
1:29
Renewed vs New Laptop 🔥 Refurbished Laptop - BUY or NOT ?
185K views
Feb 11, 2022
YouTube
421 Gadgets
8:54
Refurbished laptop - 100% Honest 🔥 Review with Experience | Real Tru
…
4.1K views
Feb 22, 2025
YouTube
Learning Night
8:06
Unboxing Refurbished Laptops from Amazon
8K views
Nov 1, 2023
YouTube
ShotokuTech
2:45
How to Check your Laptop is Original or Refurbished (Repaired
…
307.8K views
Jan 5, 2021
YouTube
IT in 5 minutes
10:38
Best Referbished Laptop 🔥 Best deals on Amazon
9.4K views
Oct 22, 2024
YouTube
PC Tech Talk
0:24
Navigating the World of Refurbished Laptops💻 | NewJaisa #refurbishedla
…
126.5K views
May 2, 2024
YouTube
NewJaisa
See more videos
More like this
Shop refurbished laptops amazon
Sponsored
$329.99
Dell Latitude 5520 15.6" Laptop, i5 1145G7 2.6Ghz, 16GB DDR4, 256GB Nvme SSD, HDMI, Thunderbolt 3, Webcam, Windows 11 Pro (Renewed)
Amazon.com
4
Free shipping
$329.99
Dell Latitude 5520 15.6" Laptop, i5 1145G7 2.6Ghz, 16GB DDR4, 256GB Nvme SSD, HDMI, Thunderbolt 3, Webcam, Windows 11 Pro (Renewed)
Amazon.com
4
$176.04
$1,199.00
Macbook Air 13-Inch (2015) - Core i5 - 4GB - SSD 256GB
BackMarket US
85% off
$176.04
$1,199.00
Macbook Air 13-Inch (2015) - Core i5 - 4GB - SSD 256GB
BackMarket US
$329.99
$499.99
Dell 15 Laptop - W/ Windows 11 OS - 15.6" HD Screen - 8 GB - 512G - Usedc15255hbtshqzk
dell_Admedia
Free shipping
34% off
$329.99
$499.99
Dell 15 Laptop - W/ Windows 11 OS - 15.6" HD Screen - 8 GB - 512G - Usedc15255hbtshqzk
dell_Admedia
Free shipping
$239.00
$820.00
Macbook Pro Retina 13-Inch (2017) - Core i7 - 16GB - SSD 128GB
BackMarket US
70% off
$239.00
$820.00
Macbook Pro Retina 13-Inch (2017) - Core i7 - 16GB - SSD 128GB
BackMarket US
$697.99
Dell Latitude 5420 Rugged Laptop, 14 Inch FHD (1920 X 1080), Intel Core I5-8350U, 32GB RAM, 512GB SSD, Windows 11 Pro (Renewed)
Amazon.com
Free shipping
$697.99
Dell Latitude 5420 Rugged Laptop, 14 Inch FHD (1920 X 1080), Intel Core I5-8350U, 32GB RAM, 512GB SSD, Windows 11 Pro (Renewed)
Amazon.com
Free shipping
$225.60
Dell Latitude 5400 14" Touchscreen Laptop, Intel Core I5, 16GB RAM, 256GB SSD, Win11 Pro (Renewed)
Amazon.com
22
Free shipping
$225.60
Dell Latitude 5400 14" Touchscreen Laptop, Intel Core I5, 16GB RAM, 256GB SSD, Win11 Pro (Renewed)
Amazon.com
22
$438.05
$2,299.00
Macbook Pro Retina 16-Inch (2019) - Core i7 - 16GB - SSD 512GB
BackMarket US
21
80% off
$438.05
$2,299.00
Macbook Pro Retina 16-Inch (2019) - Core i7 - 16GB - SSD 512GB
BackMarket US
21
$378.00
$1,199.00
Macbook Air Retina 13-Inch (2018) - Core i5 - 8GB - SSD 128GB
BackMarket US
20
68% off
$378.00
$1,199.00
Macbook Air Retina 13-Inch (2018) - Core i5 - 8GB - SSD 128GB
BackMarket US
20
$384.24
HP 2025 New 14 Inch Laptop For Student Business, Intel N150 CPU(Beats N4120), 16GB RAM, 384GB Storage(128GB UFS+256GB MSD), Wi-Fi 6, Copilot AI, 1
Amazon.com
475
Free shipping
$384.24
HP 2025 New 14 Inch Laptop For Student Business, Intel N150 CPU(Beats N4120), 16GB RAM, 384GB Storage(128GB UFS+256GB MSD), Wi-Fi 6, Copilot AI, 1
Amazon.com
475
$549.99
$869.99
Dell 16 Laptop - W/ Windows 11 OS & Intel Core 5 - 16 GB - 512G - Usedc16250hbtshwvs
dell_Admedia
Free shipping
36% off
$549.99
$869.99
Dell 16 Laptop - W/ Windows 11 OS & Intel Core 5 - 16 GB - 512G - Usedc16250hbtshwvs
dell_Admedia
Free shipping
$195.60
Dell Latitude 7480 14in FHD I5-6300U 16GB 256GB SSD Webcam Backlit Keyboard Black (Renewed)
Amazon.com
730
Free shipping
$195.60
Dell Latitude 7480 14in FHD I5-6300U 16GB 256GB SSD Webcam Backlit Keyboard Black (Renewed)
Amazon.com
730
$799.95
Dell Precision M7730 Laptop, 17.3Inch FHD (1920X1080), Intel Xeon E-2176M, 64GB (4X16gb) RAM, 1TB SSD, NVIDIA Quadro P3200, Windows 10 Pro (Renewed)
Amazon.com
Free shipping
$799.95
Dell Precision M7730 Laptop, 17.3Inch FHD (1920X1080), Intel Xeon E-2176M, 64GB (4X16gb) RAM, 1TB SSD, NVIDIA Quadro P3200, Windows 10 Pro (Renewed)
Amazon.com
Free shipping
$124.00
$359.00
Macbook Air 13-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
35
65% off
$124.00
$359.00
Macbook Air 13-Inch (2015) - Core i5 - 8GB - SSD 128GB
BackMarket US
35
$289.98
HP 14 Inch Laptop, HD Display, Intel Core I3-N305, 8 GB RAM, 256 GB SSD, Intel UHD Graphics, Windows 11 Home In S Mode, Natural Silver, 14-Ep0299nr
Amazon.com
138
Free shipping
$289.98
HP 14 Inch Laptop, HD Display, Intel Core I3-N305, 8 GB RAM, 256 GB SSD, Intel UHD Graphics, Windows 11 Home In S Mode, Natural Silver, 14-Ep0299nr
Amazon.com
138
$599.99
$919.99
Dell 16 Laptop - W/ Windows 11 OS - 16GB - 512G - Usedc16256hbtshwdn
dell_Admedia
Free shipping
34% off
$599.99
$919.99
Dell 16 Laptop - W/ Windows 11 OS - 16GB - 512G - Usedc16256hbtshwdn
dell_Admedia
Free shipping
$369.99
HP Chromebook 15.6" Laptop For Student & Business, 15.6 Inch HD Display, 8 GB RAM, 192 GB Storage (64 GB Emmc + 128 GB Microsd), Intel Quad-Core
Amazon.com
12
Free shipping
$369.99
HP Chromebook 15.6" Laptop For Student & Business, 15.6 Inch HD Display, 8 GB RAM, 192 GB Storage (64 GB Emmc + 128 GB Microsd), Intel Quad-Core
Amazon.com
12
$306.00
$2,399.00
Macbook Pro Retina 15-Inch (2018) - Core i7 - 16GB - SSD 256GB
BackMarket US
9
87% off
$306.00
$2,399.00
Macbook Pro Retina 15-Inch (2018) - Core i7 - 16GB - SSD 256GB
BackMarket US
9
$749.99
$1,269.99
Dell 16 Plus Laptop - W/ Windows 11 OS & Intel Core Ultra 7 - 16GB - 1T - Usedb16250hbtshmgx
dell_Admedia
Free shipping
40% off
$749.99
$1,269.99
Dell 16 Plus Laptop - W/ Windows 11 OS & Intel Core Ultra 7 - 16GB - 1T - Usedb16250hbtshmgx
dell_Admedia
Free shipping
Computers at Amazon
®
| Shop Computers & Add-Ons
https://www.amazon.com › computers
Sponsored
Top-Rated PCs, Laptops & More. Free 2-Day Shipping with Amazon Prime.
Feedback