Mice & Trackballs Important Information Material:ABS Package Size: 14cm x 2cm x 1.5cm/5.51" x 0.79" x 0.59" (Approx.) Overview:Owing to reliable 2.4GHz wirele technology, this mouse can achieve quick connection and wirele transmiion effective distance about 8 to 10 meters.Handwriting input design is the major feature of this mouse, so it can be applied on a narrow desktop and allow you to use comfortably while in different sitting gesture. You can grip conveniently due to the humanized button position design.Made of premium ABS material, it is lightweight and durable to use.The length of the product is 14cm, the width is 2cm, and the height is 1.5cm.It is compatible for Windows 7/8/10/Vista/XP/2000, for Android, for Linux, for Mac OS. One AAA battery can support usage time for about 1-3 months. It has automatic power off function when no signal, which is more power saving. With small base, it does not occupy much space. Note:Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Specifications:Number Of Keys: 4Wirele Carrier Frequency: 2402MHz-2480MHzWirele Working Channel: 16, Automatic Frequency HoppingRated Operating Voltage: 3VRated Operating Current: 15mATracking System: OpticsSpeed: 14 Inches Per SecondWirele Type: 2.4GTransmiion Distance: 10 Meters3 Speed DPI Adjustment: 800/1200/1600Supported Systems: for Windows 7/8/10/Vista/XP/2000, for Android, for Linux, for Mac OSBattery: 1 x AAA Battery(Not Included)Features: High Precision, DPI Adjustable, High Sensitivity Package Content:1 x Wirele Mouse Pen 1 x Receiver 2 x Adapter