Lupines Betty is their reference in terms of brightness & she is a beauty too. Betty is not only brighter than their Edison & Wilma she also offers a couple of additional functions like a 3 step mode with a very efficient low-beam super flash & an extremely low power consuming emergency mode. Bettys new emergency mode could help you in a survival situation giving you a light to survive on over weeks. Lupines strongest battery can run Betty over 2 weeks or even over a month each night. Conclusion: Betty is not only their brightest light ever but a light which offers the flexibility of extreme run times.1750 Lumens 23W7 x CREE XP-G R5 leds 155 grams