TECHNICAL SPEC 1.Model NumberMK921 2.ConnectivityWired, 2.4GHz, BT 3.BT Version5.3 4.Number of Keys80 5.Lighting EffectsRGB 46 Modes 6.Battery Capacity4000 mAh 7.Battery Life (LED Off)Up to 250 Hours 8.Battery Life (LED On)Up to 20 Hours 9.Charging TimeApprox. 7 Hours 10.InterfaceUSB-C 11.Cable Length1.6m Nylon Braided 12.Power Rating5V = 209mA WHAT'S IN THE BOX? 1.MAXFIT8 MK921 Luffy 2.Exclusive Photocard 3.Quick Start Guide 4.USB-C Charging Cable 5.Keycap and Switch Puller 6.2 pcs Extra Switches PACKAGING INFORMATION 1.Box Size365*186*50 mm 2.N.W.814.2 g 3.G.W.1084.4 g 4.Carton Size38*27.4*38.7cm 5.N.W.10.9 kg 6.G.W.11.5 kg 7.Qty/ctn10pcs