<p><b>★Specification</b></p><p>1)  Product size: 140*20*15mm</p><p>2)  Product weight: 29g</p><p>3)  Number of keys: 4</p><p>4)  Operating frequency: 2.402GHz~2.480GHz</p><p>5)  Channel: 16 with Automatic frequency hopping</p><p></p><p><b><br></b></p><p><b>★DPI adjust function</b></p><p>There are 3-resolution adjustable 800/1200/1600dpi. The original is 1200DPI. You can choose your favor DPI through this function.</p><p></p><p><b><br></b></p><p><b>★Instruction for use</b></p><p>1.Open the battery cover. Please use left hand hold the beginning of pen mouse, and pull the battery cover by right hand as shown bellow.（see below）</p><p>2.Insert 1 AAA batteries with correct polarity (+/-), then open the power switch.</p><p>3. Remove the USB receiver from the battery compartment and plug it into the computer's USB port，the pen mouse has been matched with the receiver when out of factory. You can use this pen mouse directly after insert the receiver.</p><p>4.This pen mouse can sliding on the mouse pad and desktop like a pen to make the cursor movement as shown left bellow.</p><p></p><p><b><br></b></p><p><b>★The red light flashes and then goes out</b></p><p>When connected to a good mouse pen found that the red light is only a flash off, usually the USB receiver did not plug or identify good, re-plug the USB receiver can be</p><p></p><p><b><br></b></p><p><b>★Low voltage alarm function</b></p><p>When all batteries are low, the low voltage alarm will light up, and warn to change the batteries. Please use AAA battery.</p>