Dimensions: Height 5.45 in (138.47 mm), Width 12.65 in (321.2 mm), Depth 1.39 in (35.4 mm), Weight (with batteries): 27.48 oz (779 g); Connection Type: Bluetooth Low Energy Wireless (Bluetooth 5.1); Wireless Range: 33 ft (10 m); Switch Type: Mechanical (Brown, tactile); Battery: 2 x AAA; Battery Life: 36 months; Indicator Lights: Battery LED, 3 Bluetooth channel LEDs, Caps Lock LED; Customization App: Supported by Logi Options+ on Windows and macOS; System Requirements: Bluetooth Low Energy - Windows 10/11 or later, macOS 10.15 or later, iPadOS 13.4 or later, iOS 11 or later, ChromeOS, Android 8 or later; Logi Bolt USB Receiver - Windows 10/11 or later, macOS 10.15 or later, ChromeOS; Internet Access: Required for Logi Options+ download; Warranty: 1-Year Limited Hardware Warranty; Part Numbers: Heartbreaker English - 920-010709, Mist English - 920-011232, Cosmos English - 920-011233