The Actik CORE head torch is a powerful, versatile and rechargeable Li-Ion headtorch which is excellent for fast paced outdoor activity with a maximum beam of a whopping 450 lumens. It has a variety of beam settings which cater for proximity work and focused settings for high level activity. There's also a red light for map reading or for use as a strobing beacon in emergencies. Battery life is very good with about 8 hours if used on the standard 100 lumen setting. This will drop to 2 hours if used on Maximum. The core battery can be replaced with 3 AAA batteries if needed.