Mammut t trail head torch black thanks to its four definitionleds offering a light range of up to 30 meters 80 hours of light duration as well as an emergency signal function the t trail covers a very wide spectrum of applications from camping to hiking and night bouldering weighing in at just 72 grams this barely noticeable headlamp always provides sufficient light maximum operating time 80 h maximum light range 30 m lumen 80 lm weight including batteries 72 g ideal for back