The Electralight Rechargeable 3W COB LED Work Light features an ultra-bright 90 lumen COB LED work light and super bright 30 lumen LED spotlight. Features a strong magnetic swivel hook for easy hanging and adjustable magnetic swivel base. No need for batteries – equipped with Li-ion Rechargeable battery (reaches full charge in approximately 4 hours). Rechargeable by AC/DC power adaptor and USB connector cable (both included). Run time is around 4 hours for work light mode and 8 hours on spotlight mode after full charge. Can be used as a USB power bank to recharge phones, tablets and more.