A good dive light makes many types of diving possible — from wreck penetration to night diving — and helps keep you safe. Our 2018 scuba diving Gear Buyers Guide will help you find the best scuba diving light that fits your style.

Seac’s flagship dive light, which is depth rated to 656 feet, cranks out 1,500 lumens at a range of 15 to 75 degrees from a rechargeable lithium-ion battery for up to four hours (two hours at maximum power). The R30’s lens is made from tempered optical glass, and the model features double O-ring seals and an electromagnetic switch with max power, reduced power and intermittent flash modes.

This super-compact dive light employs a CREE XM-L2 T6 LED to pump out 900 lumens in a tightly focused 14-degree, long-range spot beam. The light has three power settings as well as an SOS mode and a blinking mode. The Mini 900 will run for up to two hours at full power (eight hours at 25-percent power) using an optional Xtar 18650 3400mAh battery.

The Light Cannon is a legend in the world of dive lights, and this upgraded pistol-grip version lives up to the name. Able to crank out brilliant illumination, the light has two power modes: High (1,100 lumens), and Low (440 lumens). Eight C-cell batteries provide 16 hours of run time on high. The light is depth-rated to 500 feet.

This ultracompact dive light is a powerhouse when it comes to illumination. It can produce 250 lumens of light for five hours of run time, powered by four standard AA batteries. The push-button switch is easy to use, even when you’re wearing heavy gloves. Perfect for travel, the light measures 7.5 inches in length and weighs only 6 ounces.