Logitech K400 Plus Wireless Keyboard

K400 is a quiet and easy-to-use keyboard with a built-in touchpad, featuring all the hotkeys familiar and loved by Windows® and Android™ users. With media control keys, it allows easy navigation on PC-controlled TVs. Connectivity: Logitech Unifying Protocol (2.4 GHz) Wireless range: >10 meters Wireless range Battery: 2 AAA batteries Lifespan: 18 months Special keys: Mute, Volume Up, Volume Down Key life: 5 million keystrokes Typing noise: less than 55 dBA https://www.logitech.com/zh-hk/shop/p/k400-plus-touchpad-keyboard