What's the polling rate?

Polling Rate (Wired Mode): 1000Hz Polling Rate (Wireless Mode): 90Hz The keyboard polling rate is 1000 Hz (Wired Mode) / 90 Hz (Wireless Mode), thanks for your attention to Keychron K8.

What material are the key caps made of? PBT?

Dear Customers, Keycap Material: ABS thank you for your attention to our keychron mechanical keyboard. Best Regards Keychron

After a few months, the backlight stopped working. it is fully charged and i have turned it off/on. change lightbulb? how?

Did you try func + up arrow that will adjust the brightness, you can also try pushing the “lightbulb” button to the top right a few times, you might have switched color modes.

what is the difference between 3 switch colors?

Different colored switches have different operating forces pre-travel and travel distances. The sound level of the linear red switch is quiet and more suitable for Office or games. The sound level of the clicky blue switch is clicky, which is more suitable for Typist, and the sound level of the tactile brown switch is gentle, which is more suitable for Midway office or gaming. Thanks for your attention to Keychron K8.

ASIN	B08B5WHYTT
Antenna Location	Office, Typist, Youtuber
Best Sellers Rank	#1,675 in Video Games ( See Top 100 in Video Games ) #2 in Mac Gaming Keyboards
Box Contents	Keycap Puller, Mac and Windows keycaps, USB Cable
Brand	Keychron
Brand Name	Keychron
Button Quantity	87
Colour	white
Compatible Devices	Laptop: Macbook Pro, Macbook Air, Macbook, Mac Mini, Chromebook, Lenovo, Asus, Dell, Xiaomi, Huawei Matebook etc.. PC with Bluetooth antenna. Tablet: iPad, iPad Air, iPad Pro etc. Gaming console. Smartphone and more. Compatible Devices Laptop: Macbook Pro, Macbook Air, Macbook, Mac Mini, Chromebook, Lenovo, Asus, Dell, Xiaomi, Huawei Matebook etc.. PC with Bluetooth antenna. Tablet: iPad, iPad Air, iPad Pro etc. Gaming console. Smartphone and more. See more
Connectivity Technology	Bluetooth, USB-A
Country of Origin	USA
Customer Reviews	4.4 out of 5 stars 578 Reviews
Enclosure Material	Plastic
Hand Orientation	Ambidextrous
Item Dimensions L x W x H	35.3L x 12.3W x 4.2H Centimeters
Item Weight Unit of Measure	1 Kilograms
Keyboard Backlighting Color Support	Single Color
Keyboard Description	Wireless, wired, white backlit, for Mac and Windows, tenkeyless layout
Keyboard Layout	QWERTY
Language	English
Manufacturer	Keychron
Mechanical Keyboard Switch Model	Gateron G Pro Brown
Model Number	K8-A3
Number of Batteries	1
Number of Keys	87
Number of Sections	1
Power Source	Battery Powered
Product Features	Wireless, Wired, Backlit, Tenkeyless
Recommended Uses For Product	Office, Typist, Youtuber
Series Number	8
Special Feature	Wireless, Wired, Backlit, Tenkeyless
Style Name	Contemporary
Switch Type	Tactile
Theme	technology, productivity, gaming
Water Resistance Level	Not Water Resistant

Keychron K8 Mechanical Gaming Keyboard, 87 Keys Wireless Tenkeyless Keyboard with Gateron Brown Switch/White LED Backlit/Wired USB, Bluetooth Computer Keyboard for Mac Windows PC Typist Gamer

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