Soonfire FD39 USB Rechargeable Bright Bike Light
[FD39]

I have a lot of flashlights, but this one instantly became my favorite. It's made of high-quality anodized aluminum and includes a nice belt clip. It can run on an 18650 rechargeable battery (included) or two 123 batteries. The light has a micro USB connector on the side for charging and a second button for brightness settings. This button has two modes, which you toggle between with a long press. The brightness levels range from barely more than a nightlight to insanely bright. At the highest setting, the light will auto-dim or turn off if the LED gets too hot to prevent damage. It also has medium brightness, strobe, and SOS modes. You get a lanyard, USB charging cable, and a carry case. No charger is included, but you can use a phone or tablet charger or charge from any USB socket using the included cable. Overall, this is a great flashlight that deserves a well-deserved 5 stars.