This is a powerful compact rechargeable flashlight. It has 4 light levels plus a strobe mode. Regardless of it's size, it lluminates very well, It is bright enough for almost any outdoor activity (camping, hiking, etc) as well as for emergency use (in the car or as a light source during a power outage for example).
It is powered by a size 18650 rechargeable Lithium Ion battery (included) and it can be easily replaced with a freshly charged battery as necessary. You can also charge the battery using the flashlight's built-in USB charging circuit and USB cable (supplied).
We are very happy with this light and expect many years of service, as LED bulbs are suited for very long life before failure. This light will live in our vehicle's glove box, to be used in emergencies.