Princeton Tec AMP 1L Flashlights 100 Lumens Black. It is waterproof up to 100M (330ft) with a large carabiner loop making it easy to clip to your diving gear if youre headed under water. Convert the Amp 1L from a flashlight into a marker light by snapping on the translucent white cone included. It gets bonus points after its main job is done: it has a built-in bottle opener handy for post dive activities. Specifications for Princeton Tec AMP 1L Flashlights: Manufacturer: Princeton Tec Color: Black Beam Color: White Light Output: 100 lumens Package Contents: Princeton Tec AMP 1L Flashlights Princeton Tec AMP1RBK-BK: AMP 1L Flashlights 100 Lumens Black