With simpler move operation than ordinary mouse, such pen-type mouse adopts ergonomic design, more suitable for grip. Preferred by notebook users, USB computer stylus can be compact, plug and play, no need to drive. And pen-type mouse is with on/off switch, which also adopts optical system. Universal 2.4ghz wireless USB light pen mouse, adjustable 800/1200/1600dpi, 4 button, suitable for PC intelligent TV. Support systems for 7 / 8 / Vista / XP/ 2000 / Android / Linux / . Item Type:Pen-type mouse Model:PR-03 2.4G Wireless Mouse mission Distance:10 meters 3-Step DPI Adjustment:800/1200/1600 Mini Wireless Receiver Battery:Use 1 AAA battery (not included) Number of Keys: 4 Wireless Carrier Frequency: 2402 MHz-2480 MHz Wireless Working Channels: 16, automatic frequency hopping Rated Working Voltage: 1.5V Rated Working Current: 6 mA System: Optical Maximum Acceleration: 14 inch/second Note: Low Voltage Alarm Function: When all batteries are low, the low‑voltage alarm light of the pen and mouse light up to remind you to replace the battery as soon as possible. When replacing the battery, you must use alkaline AAA batteries. Color:Blue Material:ABS Package Contents: 1 * mouse 2 * OTG adapter 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.