The Fenix E01-V2.0 Mini EDC Flashlight can produce up to 100 Lumens of light for up to 50 minutes (1) AAA Alkaline battery. OUTPUT: -- High: 100 Lumens for 50 minutes --Medium: 25 Lumens for 4 hours 30 minutes --Low: 5 Lumens for 23 hours. Uses either AAA Alkaline or Ni-MH battery (1 x alkaline included) --Rotating switch for output selection --Blue All metal CNC machined body --Ultra-lightweight at 13 gm --Size: 2.62" x 0.59" x 0.55" Included in package: (1) E01 V2.0 flashlight, (1) AAA battery, (1) keychain, user manual and warranty card. PRC