GiftU corporate gift expert, provides customised USB drive business gift set, guaranteed imported chips, small order welcome, 10 days production 

2.4G wireless mouse, 10m effective distance 
3-resolutions Adjustable: 800/1200/1600dpi
Nano dongle
Supports Windows 7/ Vista/ XP/ 2000, Android, Linux, Mac OS.
1 AAA batteries
Number of keys: 4
Operating frequency: 2.402GHz~2.480GHz
Channel: 16 with Automatic frequency hopping
Rated operational voltage: 5V
Rated operational current: 15mA
Tracking method: Optical technology
Maximum acceleration: 14 inches/s