Wireless Mouse,ergonomic design .

1. wireless 2.4GHz mouse, reach up to 15m operation distance
2. 62.5Kbps bi-directional wireless connectivity
3. Less than 4ms typical latency
4. Low battery current consumption: 10mA/hour
5. Interference avoidance technology for robust operation in close proximity of 2.4GHz wireless technologies like Wi-Fi (R) and Bluetooth (R)
6. 2.4GHz DSSS radio and wireless USB protocol, enabling co-location of hundreds of wireless mice without any interference
7. Precise optical navigation technology smooth and accurate surface navigation
8. 800dpi resolution
9. 2 programmable hot keys on top of mouse, 38 different functions to choose from
10. With 2*AA rechargeable MH-Ni batteries
11. Compatible with Windows 98/2000/ME/XP/NT, Mac

12.  Receiver with rechargeable function.