Specification: Frequency: 2.4GHz Max Output: Less than 5mW Control Distance: 100m Light Distance: 200m Wavelength: 650nm Light Class: Working Voltage: 3.6V-4.2V Sleep Current: Less than 5uA Battery: 240mAh lithium polymer Compatibility: Windows 2003, XP, Vista, Windows 7/8/10, Linux, Android Color: Black Material: Plastic Note: This product is not a toy and should never be directed into people's eyes or at aircraft. It is not intended for use by individuals under 21 years of age. It is illegal to point this device at any flying objects, moving vehicles, or public or private structures. Package Contents: 1 x USB wireless pointer Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3cm.