Description FEATURES: LIGHT and ULTRA-THIN: Slim and light design. Made of ABS+PC material, it doesnt occupy USB port when used. The lightweight and portable designing is the first choice for travel. EASY to CONNECT: Suitable for all versions of Bluetooth device, The furthest connection distance can reach 15 meters, you only need to pair it with your device at the first time you use it, and when you use it second time, you just need to clicking the left or right mouse button. Touch to Scroll2-way touch scrolling for smooth, intuitive navigation. WIDECompatibleWorks with Bluetooth-enabled computers running Windows XP, VISTA, 7, 8 and 10. technology: Bluetooth Wireless distance: 10-15m Weight: 545g Key number:3 Resolution: 1200dpi Battery:1*AAA batteryNot including Material: ABS System requirement: Windows 2000 2003 ME XP Vista Win7 8 10 MAC OS Linux Model: Battery model: use 2.4g receiver to connect, you need to bring your own AAA battery Bluetooth model: Bluetooth connection, Type C charging model built-in about 500mA battery Package included : 1*Mouse Gift