a) Offers the convenience of the wireless Bluetooth 2.0 interface, 1000DPI.
b) Delivers the accurate response of optical Technology.   
c) Features comfortable, ergonomic design.   
d) Navigates easily using four buttons and the scroll wheel.   
e) Works at distances of up to 10 meters(33ft).   
f) Install and operates easily.   
g) Includes bluetooth usb adapter that allows you to connect up to 7 bluetooth devices at once time.
h) Works with Windows 98se,2000,XP,and server 2003.   
i) Works with Mac os x 10.2.6.   
j) Different choose for battery, with rechargeable batter or without. 
k) Comes with 1 year warranty.

Power adapter
1, charge up the bluetooth mouse battery.
2, you know the mouse is small, because small size will be easy to put into bag, but when the customer in office, and if the customer's hand is biger, maybe his feel will not very good, so he can connect the power adapter, then the mouse will become a biger mouse.  This style mouse is designed for different kinds of user.