Detailed Product Description ST-RF09 Wireless Mouse 1. With competitive price and fashion design2. Resolution: 800 - 1600 dpi 3. Rating: 3V, 20mA, key life over 3 million times 4. Interface: USB.PS/2.U+P 5. Compatible with Windows 2000, XP, 9X, ME and NT4.0 6. Radio frequency: 27M 7. All-directional operation within the distance of 0.8 to 1.5m 8. Two AAA batteries, automatic sleep mode for saving ...