Multi-device Connection Wireless ComboRAPOO 9500M both the mouse and the keyboard can be connected using Bluetooth at the same time, and three devices can be connected. The keyboard can be switched by FN+1/2/3; the device can be switched by the Bluetooth button at the bottom of the mouse; it is very suitable for people who use multiple devices for office work. 2.4GHz Wireless Keyboard and Mouse ComboThe RAPOO 2.4GHz Transmission Technology can provide anti-interference stable transmission and make sure you to enjoy the wireless freedom, just plug and play, no driver or software required. The 2.4GHz technology ensures a strong and reliable connection within 10-meter working range.The USB receiver is plugged into the battery compartment of the mouse. Full Size Wireless Keyboard Standard US layout (QWERTY) with number pad, each key is independently and appropriately spaced to prevent hitting the wrong key simultaneously. 12 multimedia hotkeys combined help you to play music and movie, browse the web, open email and more, extremely convenient and efficientThe scissor foot design and chocolate keycaps can effectively reduce keyboard noise and bring you a comfortable experience. Programable Wireless MouseThe RAPOO MT550 wireless mouse has 6 customizable programming keys. You can download custom macro software on the RAPOO official website, bringing a personalized experience to your office or game. DPI adjustable mouse delivers 4-level of DPI (600/1000/1300/1600) to cater for your different needs in sensitivity Long Battery LifeThe ergonomic wireless keyboard is powered by 2 AAA batteries support 12 months, and the wireless mouse is powered by 1 AA batterysupport 12 months (batteries are pre-included). Both mouse and keyboard have an on/off switch, turn them off when not use. save battery life and reduce battery replacement.