By moving the head, you can adjust the light from point to large circular area. After switching on, the light beam starts with 500 lumens (High) and can be dimmed down to 50 lumens (Low). With a quick "double click" on the power button, the strobe mode is activated. If you want to equip the flashlight with roll stop, you can easily do this yourself quickly with the included ring. This gives you the choice of how the flashlight is equipped with this flashlight itself.