?4000mAh Battery& Programmable Software?Built-in 4000mAh Rechargeable Battery ,13 hours of charging, standby time of 200 days, Fn+Back to check battery level(Light 1-10 means 10%-100% ),No worry about battery life, with once charge to bring you longer work and entertainment! This mechanical keyboard supports drive program ,you can anytime download the driver on the official website to customize your lights and keys, bringing you the joy and freedom of operation. ?18 RGB Backlight&14 Multimedia Keys&PBT Keycaps?Wear-resistant&oil-resistant PBT spring keycaps, OEM high and low layout design, standard ergonomic design brings you a soft touch.Removable PBT keycaps allow you to DIY by replacing like RK/GTSP/VXV/Hyekit. With real RGB Backlight,you can switch light effect(Fn+|¦)/direction(?/?)/speed(+/-)/brightness(?/?)/mode(1/2/3). With Fn+F1-12/X/Back keys,you can easily play music, control lights, browser, Email ,bring you the most convenient experience. ?Gasket Mount&99keys+1 Metal Knob&Ergonomics?This New-design 99+1 keys layout mechanical keyboard adopted Gasket Structure,with 3 layers of EVA Silencer Cotton Foam,reduced hollow sound by 90%& noises by 20%,equipped with a durable silicone layer, PCB, IXPE foam,accurate proofreading Satellite Switch...creating more stable and efficient output, improves the purity of each keystroke, and provides a very satisfying typing experience.Bottom ergonomic 3 support heights to relieve hand fatigue. ?3 Modes of Connection&Widely Compatibility?No longer limit how you connect.By sliding the button in the upper left corner, you can freely& quickly switch among the three modes. Bluetooth connection: slide to “BT”,FN+Q/W/E(switch 3 devices); 2.4G connection: slide to “Signal Sign”; Wired connection: Slide to “A” with wire.This awesome keyboard comes with coiled USB C cable to make your wired connection more stable & durable, and widely compatibility with Windows Vista/7/8/10/11,MAC,Android. ?Full-key Hot Swappable Clicky Switch?With Custom Factory pre-lubed brown switch, this AK992 triple mode keyboard are slightly quieter and easier to trigger than blue Switch, universal switch with excellent compatibility and gentle feel,best balance between Typing and Game player. Full key without conflict,support 99% 3/5-pins socket, you can choose your favorite mechanical switch style like Akko /Glorious/Cherry MX/ Kailh Cream/ Gateron switch according to your preference.