Petzl DUO Z2 430 Lumens. Waterproof and durable it is ideal for demanding sports such as caving orienteering and cycling. Featuring the FACE2FACE anti-glare function a Petzl patent the DUO Z2 headlamp allows users to face each other without blinding one another making group activities more comfortable. Specifications for Petzl DUO Z2 430 Lumens: Manufacturer: Petzl Color: Yellow Light Output: 430 lumens Band/Strap Color: Black Package Contents: Petzl DUO Z2 430 Lumens XX Petzl E80AHB: DUO Z2 430 Lumens Petzl E80AHB: DUO Z2 430 Lumens