The tri star with a dimmable light. Cost-effective lightweight unit for beginners. The Ledlenser H3 is the lightest headlamp in the H-series. It lights for up to 62 hours in the lowest setting and the regulator on the battery box can be used to dim infinitely the brightness of the light. LED Designation 5mm High End LED LED Configuration 3 x 5mm High End LED x Luminous flux MAX 60 lm - MIN 5 lm Beam Distance MAX 30 m - MIN 10 m Burning Life MIN 15 h - MAX 60 h Technical Data Power 3 x AAA 1.5V Energy Tank (Wh) 5.63 Wh IP protection class IPX4 Size & Weight Length flood 0 mm Head diameter (mm) 28 mm Weight (w/o packing) 114 g.