LIGHTSPEED wireless technology for super fast 1 ms report rate Romer G mechanical switches deliver quiet, precise mechanical performance and 70 million click life for incredible feel and durability Six programmable G keys put custom macro sequences and in app commands at your fingertips.1 Customize G key profiles individually for each app Bluetooth: Bluetooth enabled device with Windows 8 or later, Mac OS X 10.12 or later, Chrome OS, or Android 3.2 or later, iOS 10 or later G613 delivers up to 18 months of gaming on 2 x AA batteries. System Requirements: Windows 7 or later, Mac OS X 10.10 or later, Chrome OS, Android 3.2 or later, USB port