Logitech K400 PLUS Wireless Touch Keyboard, Black, HR

Logitech K400 PLUS Wireless Touch Keyboard, Black, HR layout In the box: Keyboard, Unifying USB receiver, 2 AA pre-installed batteries, User documentation Connection Type: Logitech Unifying protocol (2.4 GHz) Wireless range: 10 m wireless range – Wireless range may vary due to environmental and computing conditions. Optional software – Logitech Options Battery: 2 x AA (included) Battery: 18 months – Battery life may vary based on user and computing Special Keys – Mute, Volume Down, Volume Up Connect Power: On Off Switch Key Life – Up to 5 million keystrokes Typing noise – Within 55 dBA for all keys