USB Finger Mouse Optical Laptop Notebook PC 1200DPI The mouse operation between the thumb and forefinger and middle finger, use the mouse can be typing at the same time. Mouse plug and play, mini receiver USB port first, then put the battery cover in the direction shown by the arrow away, then the section 7 battery installed in the mouse, the red light flashing, enter the working state. The 2.4 G wireless ring mouse can work on any surface, such as clothes, pants, it is ideal for use in household, office, especially for the mobile travellers. Applicable gift-giving occasions: advertising promotions, business gifts, holiday, the memorial, fairs, the anniversary celebration, pr planning, other Operating range: 10 (m)