Description: Using AVAGO 5090 photoelectric chip, it has linear stability and strong surface passing ability. With convenient base, it does not take up space. Ergonomic design is more suitable for gripping. With the design of handwritten input, it can be used on the narrow desktop and is comfortable when sitting at different angles. Made of ABS high quality 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. One AAA battery can be used for 1-3 months, and it has automatic no signal power off function, which is more power-saving. It can be used for business meeting, working PPT speech, teaching and other occasions. Item Name: Pen Mouse Material: ABS Batteries: 1 x AAA Battery (Not Included) Rated Voltage: 3V Rated Current: 15mA Transmission Distance: 10m Keys Quantity: 4 System Support: for Windows 7/for Vista/ XP/ 2000, for Android, for Linux, for Mac OS Mouse DPI: 800/1200/1600 Speed: 14 Inch/Second RF Frequency: 2.4Ghz Tracking System: Optical Wireless Work Channel: 16, Automatic Frequency Hopping Size Details: 14cm x 2cm x 1.5cm/5.51" x 0.79" x 0.59" (Approx.) Notes: 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. Package Includes: 1 x Pen Mouse 1 x 2.4g Receiver 1 x Base 2 x OTG Interfaces (Micro, Type-c)