Built-in rechargeable battery operated (High-capacity 1000mAh), no need for AAA batteries, saves cost. Recharged by any 5V USB device (such as USB adapter, power bank, laptop) with included charging cable. Elegant aluminum alloy shell with magnet inside, easy to install this light strip without any tools in two ways. Way 1: Freely adheres to any iron or metal surface, such as refrigerator, barbecue, or inside the gun safe. Way 2: Sticks to any non-metal, clean surface using the included metal strip and double-sided tape. Portable and allows flexible placement as needed. Ideal intelligent lighting for cupboard, hallway, porch, wine racks, bathroom, passageway, or any area requiring light. Two sensor modes: Mode "G": Automatically turns on when motion is detected in low light or dark conditions, turns off automatically after 20 seconds if no further motion is detected (will not activate in bright environments or daylight). Mode "On": Stays constantly illuminated, can also be used as a flashlight or emergency light. Provides 6000-6500K daylight white light with 100 lumen brightness. Comes with a 1-year warranty.