Petzl's Actik Core offers an excellent light image, flexible hybrid mode for the power supply and low weight. Only the non-removable strap is a minor disadvantage.
This test report belongs to a different type: Actik Core (600 lm)
Delivering 625 lumens and a beam distance of 115 metres, the lamp provides reliable visibility during nighttime activities.
Power is supplied flexibly via a USB-rechargeable battery or standard cells, though the battery life is limited to just 2 hours on the highest setting.
The integrated red light preserves night vision and prevents dazzling other members in your group.