As a daily cave diver, I rely on this backup light for its durability and compact design. It withstands heavy use, offers intense light, and fits perfectly in a sidemount pouch, drysuit pocket, or helmet. The twist on/off feature ensures instant readiness, making it a dependable choice for any diver.

For any serious dive, my go-to backup light is the Ammonite light. It's compact, super bright, lasts ages on easy to source AAs, and that LED is good for 100,000 hours. When it really matters, it's what I rely on to get me home.

As an experienced technical diver, I highly recommend Ammonite System for their top-quality dive lights. Their umbilical light system is highly customizable, with various batteries, light heads, and cables—ideal for any dive. The LED ONE backup lights are compact and reliable. After thousands of dives, I can confidently say that Ammonite’s products are dependable and a top choice for me and my students.