Brand ESER Model SB-02 Quantity 1 Color White Material Plastic Connection Method Bluetooth Bluetooth Version 3.0 Operation Distance 10 meters Cable Length No cm Tracking Method Optical Laser Type Red Laser Resolution 1600 dpi Power Supply 2 x AAA batteries (not included) BQB Certification No Supports System Windows 2000 / XP / Vista / 7 Other 1. Fashionable and ultrathin design delicate and beautiful feels better; 2. Four buttons one is the DPI switch button; 3. It adopts Bluetooth wireless technology transmission without using any USB interface of device. You should only connect it with the computer Ipad cellphone which have Bluetooth and carry out the Bluetooth pairing then the mouse can be operated Packing List 1 x Bluetooth mouse 1 x English user manual