Detailed Description  Rechargeable Mini Bluetooth Mouse (1) Broadcom 2042 chipset + Agilent 5030 optical IC.  Tracking method: Laser .  Bluetooth v2.0. Resolution :1600/1200/800 DPI by DPI switch.  (2) Bluetooth class 2, 20 meters distance. (3) Frequency : 2.4~2.480GHZ .  (4) Battery: built-in rechargeable Li-ion battery. USB charging function. 2 * AAA batteries is optional.  (5) Auto sleep function-power saving mode,low working electric current, battery life increased 50%. one touch to wake up. Built-in particular power managing software. Power: 2-5VDC (6) Pairing key.  (7) Ergonomic design, Fashion and stylish. (8) Bluetooth HID profile.  (9) Support Microsoft windows, Mac OS. windows mobile 5/6 .  (10) Color: yellow/green/red/blue .  (11) Mouse Size: 96 x 56 x 27mm .  Mouse weight: 60g with Batteries. Packing: Color box Unit packing size: cm . Unit packing weight: g (12) Accessories:  a. Bluetooth OPtical Mouse  b. USB cable.  c. User's Manual  d. Bluetooth USB Dongle is optional. (13) Carton: 50pcs/carton  Carton size: 61*43*39.5CM  carton weight: 16.5 kg