Model: RM-701
1. Frequency: 27MHz 2. Only need one battery . 3. High resolution of 800DPI. 4. Size: 95 x 52 x 30mm
5. Ergonomic design with good thumb rest.
6. Free 360-degree use within 1.5m radius.
7. Compatiable with Windows 98 / ME / 2000 / NT / XP.
8. Connection port: USB / U+P.
9. Different colors available.