2.4GHz wireless connection, up to 10m operation distance (depend on environment).<br> If there is no 2.4GHz signal, it will automatically power off to save power.<br> Ergonomic pen shape design, fits comfortably on your hand.<br> With low voltage alarm function, reminds you to replace battery in time.<br> Real plug and play, no extra driver needed.<br> Material: ABS<br> Operating Frequency: 2402MHz - 2480MHz<br> Transmission Distance: >10M, 360 Degrees<br> Resolutions Adjustable: 500 / 1000cpi<br> Tracing System: Optical<br> Operating Current: 15mA<br> Button Numbers: 4 Buttons<br> Rated Work Voltage: 3V<br> Rated Work Current: 15mA<br> Channel: 16 with Automatic Frequency Hopping<br> Power Supply: 1 x 1.5V AAA Battery (Not Included)<br> System Requirements: for Windows98/XP/Vista/Windows7, for Tablet PC, for Mac OS X, for Linux<br> Features: Wireless, Ergonomic Design, Pen Shape, Easy to Use<br> Size: 140mm x 20mm x 15mm/5.51" x 0.79" x 0.59" (Approx.)<br> Color: Red, Gray, Blue(optional)<br> Packing list:<br> 1 x Pen Mouse<br> 1 x 2.4G Receiver<br>Note: <br>1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. <br>2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!<br>About Shipping: <br>1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly.<br>2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.<br>3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping!