USB Rechargeable Head Light

Brightness: Approximately 100 lumens, using bright LEDs for visibility.
Power Source: Built-in rechargeable lithium battery, often around 500mAh to 600mAh capacity.
Charging: USB rechargeable, eliminating the need for disposable batteries. Some designs feature an integrated USB dongle for direct plugging into an outlet.
Run Time: Varies by mode; for example, some models offer about 4 hours in constant light mode and up to 12 hours in flicker mode.
Installation: Designed for easy, non-slip installation on bicycle handlebars or seatposts using a rubber strap or bracket, requiring no extra tools.
Modes: Multiple lighting modes are generally available, which can include various steady and flash settings.