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.

Specifications

Max lumens: 400
Display Weight: 77.5 g (AAA), 72 g (BD1500)
Max Distance: (High) 100 m, (Medium) 60 m, (Low) 12 m
Weight Without Batteries: 44.5 g
Max burntime(s) on highest setting: FL1 2.5 H; reserve 32 H (Alkaline) FL1 4 H; reserve 2.5 H (BD1500 Battery)
Max burntime(s) on lowest setting: FL1 200 H; reserve 0 H (Alkaline) FL1 225 H; reserve 0 H (BD1500 Battery)