eGear UST SplashFlash LED Light Waterproof & submersible Steady-on & SOS flashing modes, bright white LED, 25 lumens 360 degree visibility, unbreakable lifetime 1 x 5mm Nichia white LED bulb Use as a flashlight, mini lantern, tent light, boating lightthe possibilities are endless Measures 1 x 3 inches and only weighs 1oz with included AAA battery