MATHEW TECH MK80 ARCTIC Mechanical Keyboard Cyrillic,Hot-swappable

Switches Hot swap : YES Backlight Type : MULTICOLOR Package : Yes Style : Standard,Ergonomics,Folding,Multimedia,waterproof,Gaming,Mini,For Laptop,Numeric Keyboard,for Tablet,Multifunctional Keyboard Interface Type : USB,bluetooth,Other Operation Style : Mechanical Language : Russian,English Keyboard Standard : 82 Key Application : Desktop,Laptop,Number,Tablet Type : Bluetooth Wireless Brand Name : MATHEW Origin : Mainland China Certification : NONE Driver and manual download:www.mathewkb.com Unboxing Video:https://www.youtube.com/channel/UCrS3LvEJxMxcrThr0qDzMYw Facebook:https://www.facebook.com/keycapsdiy Ctrl key is in Red or green light, it means charging, when battery is full, light will be off, if you dont like light indicator, message online service and get firmware. Standard knob will be gold color Do not upgrade firmware yourself,do not click firmware upgrade in the software, or the keyboard may get damaged, you can ask online service and get correct off-line firmware version. , , , - . If you are an engineer and you always press Ctrl+backspace, keyboard may show you white backlight,please contact us, we will send you firmware Ctrl+backspace, , , , Steel plate VS Brass Plate: Steel plate version is steel plate amp;EVA foam inside, and brass version is copper plate amp;Poron foam inside.but it is totally same from outside. We accept changing keycap for buyers(English Version Keycap avaliable as well)message online service for more details. 80-keys LayoutMK80 hot-swappable South facing led,3000mAh battery,Bluetooth 5.0, wired and 2.4G connection modes, supports MAC/ Win/ Linux/ IOS/ Android systems,