The C4 eLED waterproof light is our lightest weight primary light. Designed to fit smaller hands while still offering brightness comparable to lights twice its size. Its water-cooled heat sink increases brightness underwater and improves burn time. A pair of water cooled high intensity LED's deliver over 5 watts of power. Brightness increases up to 40% underwater with UK's unique LED water cooling design. Front lens protected by heavy rubber boot. Non-corroding ABS and polycarbonate plastic construction.