Utilizes Cree XP-G2 S3 LED with a lifespan of 50,000 hours. Included one AAA battery. Ultra-compact size for everyday carry. One-handed operation with the rotating switch. The Fenix E01 V2.0 AAA Flashlight emits an impressive maximum 100 lumens from an included single AAA battery. Using an ultra-thin optical lens, this flashlight delivers a soft and balanced beam a max distance of 115ft (35m). Access three brightness levels with a quick twist of the head. At only 2.6 long and just over a half of an inch round, this little flashlight is built tough with an IP68 dustproof and waterproof rating. Super small and compact, this standard AAA battery flashlight is a great choice for your everyday carry needs.