Features:

-  Comfortable grip feeling
-  Ergo-shaped design
-  Spill resistance
-  1 * AA Battery

Specifications:

R F Frequency            : 2.4 GHz (2.408-2.474)
R F Precision              : 1200 dpi
R F Channel               :  34 channels
R F Bandwidth            : 2.0 mHz
Transmittal Speed      : 1M bps
R F Output Power      : 0 dBm
Button Life                  : 5 millions
Wireless Range          : 10 M