Black Diamond COSMO 350 HEADLAMP Fleece Tool-free size adjustment

Tool-free size adjustment

The watch constantly samples your heart rate3 to help gauge how hard you work during activities — even underwater

Maximum comfort is guaranteed thanks to the tongue with the soft snow guard on the collar

3 oz (95 g) and packs smaller than a rolled-up t-shirt

durable shell of injected ABS

Black Diamond COSMO 350 HEADLAMP Fleece Tool-free size adjustmentFor multi use camping, around the house, and outdoor adventures that require a simple light with both an all purpose beam as well as night vision. This user has the need to run the lamp on alkaline batteries if caught away from a power source for a long backpacking trip. Cosmo 350 Features: Dual Fuel: Power with three AAA Alkaline cells (included) or the rechargeable BD 1500 Li ion battery and charger (purchased separately) for maximum flexibility 350