Product Description Material: ABS Size: 14x2x1.5cm Interface: USB Transmission distance: 10 meters 3 gear CPI adjustment: 800 or 1200 or 1600 Wireless carrier frequency: 2402 MHz-2480 MHz Wireless working channels: 16, automatic frequency hopping Rated working voltage: 3V Rated working current: 15 mA Compatibility: Support system Windows 7 or 8 or 10 or Vista or XP or 2000, Android, Linux, Mac OS. Color: red, blue, gray Quantity: 1 piece Package content: 1xwireless mouse pen 1.EASY PORTABLE: 14 x 1.5 x 2 cm Mini size, just like a pen. Fits in your pocket, take to your class, meeting and wherever you go. You can use a wireless mouse anywhere you want. 2.Adjustable DPI value: 800 or 1200 or 1600. The adjustable DPI value helps you find a suitable speed. The handle is very natural and you can position your arm close to the body or even on the body for comfort. 3.Energy-saving: The wireless 2.4 GHz touch screen mouse pen comes with a USB receiver with an effective range of 10 meters. The mouse is powered by a AAA battery (not included), it supports plug and play and does not require any additional drivers. The auto sleep function removes your worry about wasting the battery. 4.Easy to use: Good for use in limited spaces or unusual places where a normal mouse is a bit difficult to use. Fits comfortably in your hand. The left and right mouse buttons are positioned well for easy clicking. 5.Supported Operating Systems: Compatible with: Windows Windows 7 or 8 or 10 or Vista or XP or 2000, Android, Linux, Mac OS. etc. Battery: 1 x AAA battery (not included).