USB RF Wireless Presenter w/ Red Laser Pointer - Black (1 x AAA)
Model: PP-820 - Color: Black + silver - Frequency: 433M (RF)/315 (IR) - Operation distance: within 20m (RF)/15m (IR) - Laser distance: 200m - Supports Windows 98/ME/2000/XP - Powered by 1 x AAA battery (included) - Chinese manual included