describe Long working time and rechargeable: Built-in rechargeable battery (500 mAh high capacity), no need AAA battery, cost saving. Charged by any 5V USB device such as USB adapter, portable, USB adapter STYLE AND EASY TO INSTALL PERSONAL: Stylish aluminum alloy housing with Built-in magnets, you can easily install these light bars in 2 ways without any tools. Method 1: Iron sticks to any bumper inside the refrigerator, grill or gun; 2: Use the included metal strip and double-sided tape to stick to any clean, non-material surfaces. Place Anywhere: The perfect smart security light for cabinets, hallways, porches , bottle racks, bathrooms, passages, wherever you need a light. You need security lighting, for example, to borrow stairs safely when you get up at night to go to the bathroom, kitchen or hallway. Outdoor patios, garages, stairwells, carriages, hallways, etc Features: Bulb: 10 LED, 50,000 hour lithium lifespan > Battery: 500 mAh, charge/discharge life 500 times. Housing: Aluminum Packing: 3 LED cabinet lights. Built-in magnets, no tools required 2 in 1 installation Stylish aluminum alloy housing with built-in magnets, easy to install this strip light in 2 ways. Method 1: Free adsorption on any surface in iron, such as a refrigerator, barbecue or indoor safe; Option 2: Use the provided metal strips and double-sided tape to stick non-ferrous metal surfaces and clean the surfaces. p> A portable and free exchange place according to your needs. Clean the surface before sticking. Built-in rechargeable battery (large capacity 500 mAh), no need AAA battery, standby for 2 years to save cost Size: 19*3*1.5cm