Specification: Item Type: Red Switch Typewriter Mechanical Keyboard Material: ABS, PBT Model: For B705 Battery Type: Built in 1500mAh Li Ion Battery (Included) Bluetooth Version: BT5.1 Effective Distance: Approx. 10meter / 32.8ft Key Position: 100 Keys Switch: Red Switch Recesses Length: Approx. 35cm / 13.8in, Can Be Placed on Tablet and Phone at the Same Time Connected Devices: Smartphones, Tablets, Laptops, Desktop Computers Can Be Connected at the Same Time Compatible System: Compatible for Windows, for Android or for IOS How to Use: Turn on the Bluetooth connection can be, specific reference to the detailed instructions Lighting effect shortcut keys. Fn+Del: change the backlight mode Fn+Ctrl: change the backlight color Fn+Back: Backlight on/off Fn+F5: backlight brightness - Fn+F6: backlight brightness + Fn+PgUp: Light effect deceleration Fn+PgDn: Lighting effect acceleration Bluetooth shortcuts. Fn+Q: for Android mode Fn+W:for Windows mode Fn+E: for iOS mode Fn+C: Press and hold for 3 seconds to reset all Bluetooth settings Fn+K: Press and hold for 3 seconds to reconnect a new Bluetooth device Packing list: 1 x Keyboard (Ship with Inbuilt Battery) 2 x Replacement Keycaps 1 x Data Cable 1 x Key Puller 1 x Screwdriver 1 x User ManualMULTIPLE BACKLIGHTING MODES: The keyboard is equipped with double injection molded ABS keycaps, supports up to 20 LED backlighting modes, supports single color mode and RGB color mode, built in 1500mAh rechargeable battery. HOT SWAPPABLE: Mechanical keys offer medium resistance, audible click and tactile feedback for a comfortable and satisfying typing experience, you can also change every switch on this hot swappable keyboard without soldering. WITH KEYPAD: 100 key full size wireless bluetooth mechanical keyboard with keypad, all keys conflict free, built in tablet and phone stand, approximately 35cm long, ergonomic keyboard includes 3 levels adjustable stand to reduce the strain on your wrists from typing at a higher angle. DUAL CONNECTION MODES: Bluetooth 5.1 and wired USB, with powerful Bluetooth 5.1 technology, you can connect up to 3 Bluetooth devices and one wired device via the included USB AC cable of the typewriter style mechanical gaming keyboard. SYSTEM SUPPORT: The red switch typewriter keyboard supports for Windows, for OS X, for Android, for IOS, etc. It supports various devices including PC, laptop, tablet, smartphone, and can be switched between devices by turning the left knob. Turn the right knob to adjust the volume.