Compatibility Windows 10(1903) and above Android 9.0 and above Dimension / Weight Keyboard: 376.6*169.6*46.8mm / 1100g Dual Super Buttons: 160.2*74.6*32.3mm / 270g Connectivity Bluetooth® 5.0 Wireless 2.4G Wired USB Battery Type / Battery Life 4000mAh Li-ion battery, rechargeable 280 use hours via 2.4G wireless connection, and 300 hours via Bluetooth connection 4-8 hours charging time Special Features 87 keys Kailh Jellyfish X switches Hot-swappable PCB Support n-key rollover Double-layered ABS keycaps with matte UV coating Programmable buttons RGB Backlight Function shortcut keys and Fn lock MDA-like height. Top mount style. Fast-mapping on Super Buttons (no software needed) Support 8BitDo Ultimate Software V2 Includes 8BitDo Retro Mechanical Keyboard - Xbox Edition x 1 8BitDo Dual Super Buttons x 1 2.4G adapter x 1 USB cable x 1 Instruction manual x 1 8BitDo Fun Stickers x 2