1[2.4GHz]: The optical pocket pen mouse uses 2.4GHz wireless connection technology, with bluetooth 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 protection and convenient. 4[High Compatibility]: The stylus mouse is compatible with various devices, suitable for laptops, tablets, smart phones, for Android phones and tablets and for WIN system with Bluetooth. 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. 6[2 Modes]: The bluetooth 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 PenMaterial: ABSDPI: 1200Number of Buttons: 4Wireless Carrier Frequency: 2402MHz-2480MHzWireless Working Channels: 16, Automatic Frequency HoppingRated Operational Voltage: 3VTracking Systems: OpticsRated Operational Current: 15mAMaximum Acceleration: 14 Inches per SecondBattery Type: Lithium BatteryBattery Capacity: 200mAh(included)1 x Mouse Pen1 x USB Cable1 x 2.4G Receiver1 x User Manual