Specifications: -Product Name: MK721 30TH Edition -Product Number: MK-721-CKTR1-US -Switch Type: Kailh Box V2 Brown -Keycap: PBT Double-Shot, OEM Profile -Extra Keycap Set: PBT Double-Shot. OEM Profile -Material: Aluminum / Plastic -LED Color: 16.7 Million RGB -Polling Rate: Wired/2.4GHz Mode - 1000Hz / Bluetooth Mode - 125Hz -Response Time: Wired/2.4GHz Mode - 1ms / Bluetooth Mode - 8ms -On-the-fly system: Yes, through Function Key (FN) -Connectivity: Wired / 2.4GHz / Bluetooth 5.1 -Charging: Support Wired Charging -Battery: 2000mAh -Battery Life: 73hrs (LED Off) -OS Compatibility: Windows 8+/Mac OS X 10.10+/Android/iOS -Software Support: Yes, Cooler Master MasterPlus+ -Cable: 1.6m, USB-C to USB-A / Detachable & Coiled Braided Cable -Wrist Rest: Cloth/SBR, 334x95x18mmRed Switch Keys, Pbt Double-Shot Key Caps And 3 Different Mode Connections - Space Grey Colour