The S3D spool is yet another impressive feature of the Calcutta Conquest

Imagine being a hot water tank

Simple and Lightweight

Diving to a max depth of 4ft

Black Diamond Storm 450 Headlamp Fluorocarbon Mainline The S3D spool is yetFor the technical consumer who wants the best, brightest, most waterproof, feature rich headlamp to use for fast paced, extreme environment activities. This user also has the need to run the lamp on alkaline batteries if caught away from a power source for a long expedition. FEATURES Dual Fuel: Maximum flexibility to utilize either the rechargeable Lithium Ion BD 1500 battery (purchased separately) or Alkaline cells (included) 450 Lumen max output