1. [2.4GHz]: The optical pocket pen mouse uses 2.4GHz wireless connection technology, with wireless transmission, and the distance up to 393.7in. 2. [Ergonomic Design]: The wireless mouse pen adopts the ergonomic design, effectively reduces the pressure when the button is triggered, feel comfortable and not easy to produce fatigue. 3. [200mAh Lithium Battery]: The handwriting mouse built in 200 mAh large capacity rechargeable lithium battery, recyclable charging, environmental and convenient. 4. [High Compatibility]: The stylus mouse is compatible with devices, suitable for laptops, tablets, smart phones, for phones and tablets and for WIN system with . Do not support for IOS. 5. [Optical Sensor Tracking]: The wireless mouse pen uses optical sensor tracking technology, accurate movement, high sensitivity, coherent writing, quick response and no delay. [2 Modes]: The mouse pen has two modes, can switch between desktop mode and air mode, with a middle button function, suitable for drawing CAD people. Item Type: Mouse Pen DPI: 1200 Number of Buttons: 4 Wireless Carrier Frequency: 2402MHz-2480MHz Wireless Working Channels: 16, Automatic Frequency Hopping Rated Operational Voltage: 3V Tracking Systems: Optics Rated Operational Current: 15mA Maximum Acceleration: 14 Inches per Second Battery Type: Lithium Battery Battery Capacity: 200mAh(included) How to Use:Plug and then use it. Note:Please note that our mouse pen does not support for IOS. Colour:Black Material:ABS Package Contents: 1 x Wireless Mouse Pen 1 x Charging Cable 1 x 2.4G Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.