For a technical user who expects all-around performance and features out of their headlamp but still values a small size and compact package. This user has the need to run the lamp on alkaline batteries if caught away from a power source for a long expedition.
Spot 400 Features
Dual-Fuel: Maximum flexibility to utilize either the rechargeable Lithium Ion BD 1500 battery or Alkaline cells (included)
400 Lumen max output
 
Check out the Black Diamond website for all the specs!