1. 【COB LED work light & foldable design】 The head light of USB work light is equipped with 2 x 15W LEDs. Ultra bright sidelight with 5W COB strip light. The foldable design is portable to hold your bag in place and is suitable for outdoor activities.2. 【Infinitely dimmable and power display】 Press and hold the "+" "-" switch to adjust the brightness to your needs. 5 green lights as indicators show the rest of the performance. Every green light means 20% performance.3. 【Rotatable, Magnetic Base & Hook】 Flexible, rotatable design for multi-angle lighting. Built-in super magnetic and hook work light. Just hang up and work hands-free.4. 【USB battery and power bank function】 Built-in lithium-ion battery with 1 x 1800 mAh and supplied USB charging cable. Please take out the screw first if you want to add another battery. Fully charged: around 4 hours. Working time: 4-5 hours. USB output that doubles as a convenient bank for charging your phone and other devices in an emergency.5. 【Extremely versatile flashlight】 Easily attaches to bag, tool box or pouch. Portable COB flashlight for garage, home, outdoor, workshop, car repair, camping, caving, fishing, dog walking and emergency use.