<b>How to use:</b><br> 1.Open the battery cover, insert 1 AAA battery with correct polarity (+/-), then open the power switch.<br> 2.Insert the mini receiver into computer USB combo. You can use this pen mouse directly after insert the receiver.<br><br> <b>Features:</b><br> Novel:Like a pen that you can handle it more comfortable<br> Humanized design: Fit your hand perfectly, relieve pressure on carpal tunnel area<br> 4 buttons: Left/Right/Scroll wheel/DPI<br> Adjustable DPI: Three DPI levels(800-1200-1600) for you to choose per your needs<br> 10 meters/33ft operate distance, satisfy your daily needs<br> 2.4GHz wireless technology, ensure strong signal and smooth operation<br> USB design, plug and play, very easy to use<br> Low battery alarm<br><br> <b>Specifications:</b><br> Size:140*20*15mm<br> Item Weight:29g<br> Color: Grey/Red<br> Number of keys: 4<br> Operating distance: 10m/33ft<br> Engine: Optical<br> DPI: 800-1200-1600<br> CPI: 500/1000<br> Operating Frequency: 2.402GHZ-2.480GHZ<br> Channel: 16 with automatic frequency hopping<br> Maximum acceleration: 14 inches/s<br> The Rated Working Voltage: 1.5 V<br> Battery: 1xAAA (not included)<br><br> <b>Note:</b><br> ☞Alarm lights up when the battery is dead, reminding you to change battery in time, ensuring normal use.<br> ☞The battery is not included.<br> ☞Please turn on the power switch.<br> ☞This is not an air mouse, you need to move the mouse on the table.<br><br> <b>Package Included:</b><br> 1 x Pen Mouse<br> 1 x Mount<br> 1 x USB 2.4GHz Receiver<br> 1 x User Manual <br><br>