Battery pack: Li-Ion 5400 mAh rechargeable via USB-C connection.
Operating modes: max power, reduced power, flashing.
Switch lock to prevent accidental ignition.
Lumens rating Mono-LED lamp that generates 2300 lumens at full power and 730 lumens at intermediate power.
External battery charging, with USB-C recharging cable and LED for monitoring charging status. Internal 5400mAh Li-Ion
The on/off button is magnetic, and has a spring return.
The bag that holds the lamp is made in shockproof material. Very helpful when transporting the torch, including by plane.