Ultra-powerful with 1100 lumens in BOOST mode, the DUO S is the most powerful rechargeable headlamp in the Petzl line. � Light output: 1100 lumens � Beam pattern: flood, mixed or focused � Energy: Lithium-Ion ACCU 2 battery (included) � Recharge time: 4 h � Watertightness: IP67 � Headlamp comes with: - two plates for mounting on helmets - 110/240 V charger