Cambridge 3-in-1 LED Smart Safety Light automatically turns on and off when you need it - and should the power go out, it stays on! Plug in this handy light into any AC outlet and it'll stay charged and ready for use when you need it. The built-in photo electric sensor automatically turns the light on and off at dusk so it's great for hallways, bathrooms and more. Also features rechargeable battery that provides up to 4 hours of light per charge, auto/on/off setting, 50,000 hour LEDs, fold down plug and pivoting design. Approx. 4-3/4"x1-3/4"x1-1/4". 1-year limited warranty.