Whether you're a professional using a flashlight for work or security,an outdoor enthusiast who takes it camping, or an occasional user wanting it for emergencies at home or on the road, our New ML50LX C-Cell LED is The Light For All Your Needs. With Eco mode, up to 153 Hours With the familiar "Quick-Click" system users can, within the "General" function set, choose Full Power (maximum Lumens): Low Power (up to 105 Lumens); or Eco Mode - a super power saving mode that yields up to 20 Lumens with greatly extended run-time. As seen below, there are three additional function sets - Outdoor; Law Enforcement; and Military - each offering a different set of functions invoked in a different sequence, for quickest access to the functions the particular user prefers. The IMPROVED,faster-handling focus system now adjusts from spot to flood with less than 1/4 turn of the head.