Classic Retro Design, Both Bluetooth Wireless And USB Wired Connectivity Supported: suits for all kinds of usage scenario Windows / Mac/iOS / Android System Supported: Able to connect with iPad Pro, iPhone, and other devices. Pair With Up To 3 Devices Simultaneously: allow to connect with 3 devices and switch among with short cuts, increase your productivity greatly LED Dynamic Backlight: boost your typing accuracy in night and be more enjoyable while playing game Integrated Tablet Stand: easy and convenient to hold your iPad and smart phone Blue Switch: the audible click sound is so good and brings you excellent tactile bump feel