2. 4G wireless mouse

Features:
RF Digital Radio Technology with no cord,less clutter and more freedom
Advanced high precision,1000 dpi Optical Sensor-nodust accumulation and never needs cleaning
Low Power Consumption better than any previous optical mouse
supports Windows VISTA/XP/Me/2000/98/95/NT and MAC systems
Embedded Mini receiver

Spectifications:
Switch life: million times
Working current: 12mA
Holding current: 0.5mA 
Standby current:5uA
Working voltage:+3V

2. 4G wireless mouse with embedded mini receiver, easy to keep and carry.