Specifications:- Overall Dimesion(LxWxH): 4 15/16" x 4 5/16" x 13/16" (12.5 x 11 x 2 cm)- Side Length: 2 9/16" (6.5 cm)- Power Cord Length: 55 7/8" (142 cm)- Input Voltage: 110 to 240V, 50 to 60Hz- Output Voltage: Dc 12V, 2A- Power (1 Panel): 1.5W- Lifespan of LEDs: About 50,000 hours- Net Weight: 11 Lbs (5 kg). Package Contents:- 40x Smart Light Panels- 40x Adhesive Tapes- 1x Adaptor- 1x Manual. Notice: - It is recommended to stick the light on wall with sleek surface (such as ceramic, glass or wooden wall) for tight installation. - Please note that it may cause surface damage for painted wall if you took down the light.