Wireless Connectivity Hyper-fast, sub-1ms 2.4GHz SLIPSTREAM CORSAIR WIRELESS TECHNOLOGY, Bluetooth® 4.2 + LE Wired Connectivity USB 3.0 or USB 3.1 Type-A Backlight Individually lit and per key programmable, built-in lighting modes LED Color RGB USB Pass-through No Wireless Encryption 128-bit AES Battery Type Single, cylindrical rechargeable lithium-ion, built-in, 68.6mm x 18.5mm, 1-cell, 3200mAh nominal capacity, 3.67V nominal voltage, 11.7Wh (watt-hours), max. weight 49g, HAZMAT UN3481. Battery Charging Charges via USB to computer Battery Life 2.4GHz SLIPSTREAM: Up to 35hrs w/standard lighting and 175hrs w/out backlighting Bluetooth: Up to 40hrs w/standard lighting and 200hrs w/out backlighting Media keys Dedicated (MUTE, VOL DOWN/UP, STOP, PREV, PLAY/PAUSE, NEXT) USB Report Rate 1000Hz Matrix Selective 8-key roll-over iCUE (Software) Supported Windows Lock Key Yes Palm Rest Yes, full length with soft touch finish, detachable Cable 1.8 m / 6 ft, tangle-free rubber, detachable Dimensions 480.0(L) x 166.3(W) x 35.4(H) mm / 18.90” (L) x 6.53” (W) x 1.38” (H) Weight (w/o cable and wrist rest) 0.95 kg / 2.09 lbs