The yellow Tec 40 Dive Light from Princeton Tec shines at 28 lumens and uses a halogen bulb for warmer light underwater. This handheld light can be used as a backup light or as a primary light during the day. The warm light is also ideal for restoring vibrant color to the reef. A twist bezel activated switch prevents the light from accidentally turning on or off, preventing power loss while in transit or storage.