RAPOO Wireless Optical Mouse & Keyboard Black - 2.4G Connection, 10M Range, Spill-Resistant, Retro Style Round Key Cap, 1000DPI - Black Features: Keyboard 2.4G Wireless connection with 10m working range Retro style round key design 12 Multimedia hotkeys Spill-resistant design Durable Laser carved keycap 1 AA alkaline Battery (Pre-installed) 12 months battery life Dimension: 447x131x31 Weight:492g Mouse 2.4G Wireless connection with 10m working range 1000DPI optical tracking engine Left, middle and right button Two-way scroll wheel Plug-and-play Nano receiver 1 AA alkaline Battery (Pre-installed) 12 months battery life Dimesion:113x64x30mm Weight:59g Package dimension: 525x146x43mm Weight: 598g