The Luna 1 watt USB stick light is handy to illuminate anything from a keyboard to tent. The Luna's low power draw makes it a long lasting light solution. USB plug, 5V, 125mA (0.75W) 10 white LED's, 0.75W total Weight: 14 oz. Dimensions: 17 x 0.25 x 0.25"n (40.5 x 0.6 x 1.2 cm) Warranty: 12 Months Certifications: FCC and CE Optimal Operating Temp: 0-120 F (-17-48 C)