Using solar power & lithium battery technology these lights are ideal for entrances & other outdoor areas where electricity may not be available. During the day, the solar panel fitted on top of each light will charge the battery inside. At dusk, one LED will activate automatically using the stored energy from the sun, & using PIR technology a second LED will then activate when motion is detected; for safety, security & convenience. Perfect for outdoor entrance areas, balconies, paths, sheds or outhouses & also as decorative garden lights. Specifications Solar panel: 2V/0.33W Rechargeable battery: Lithium Battery, 3.2V 500m Ah Light time 6-8 hours (depending on the amount of sunlight received) Dimension:170 (L)x 78 (W)x 49 (H)mm PIR movement detection up to 5m Box Contents 1x Solar PIR Sensor Wall Light 2x mounting screws & plastic anchors. Instruction Manual