With the ultra-compact ML4 lantern, you can take the bright area lighting anywhere you go. The ML4 only weighs 2.5 ounces, is less than 4 inches long and has a carabiner hook so you can clip it to practically anything. Thanks to Ledlenser Micro-Prism technology the ML4 provides efficient, glare-free and targeted lighting up to 300 lumenss. It has 3 power modes of bright, white light and two red light modes, as well as blink mode. It is powered by an included rechargeable battery but offers Dual Power Source, meaning an AA alkaline battery can be substituted when a power source isn't available. The ML4 offers a unique magneticic charging system that makes for more efficient charging that withstand the elements, and the on/off button also acts as a battery status indicator, letting you know when it’s time to charge back up. Light functions: power, mid power, low power, boost, blink, red light. Special functions: Dual power technology, Fluorescent elements to make it easier to find the light in the dark, Carabiner snap hook for flexible usage and fastening. Luminosity: MAX 300 lm - MIN 5 lm. battery Duration: MAX 45 h - MIN 2.5 h. battery: 1x Li-ion 14500 3.7V, 2.77 Wh. Water Resistance IP66. Length: 97 mm (3.82 in). Head Diameter: 34.5 mm (1.36 in). Tube Diameter: 29 mm (1.14 in). Weight incl. battery: 71 g (2.50 oz). In the box: 1 set of rechargeable batteries, magneticic charging cable.