It sounds like you're describing a versatile headlamp with multiple functions! This headlamp appears to have several features:
- Multifunction: It likely serves various purposes beyond just providing light, perhaps including different lighting modes or additional tools/functions.
- Free expansion headband: The headband may be adjustable and expandable to fit different head sizes comfortably.
- Type-C charging: It uses a Type-C USB port for charging, which is a convenient and widely used charging standard.
- Five gear light source adjustable: This suggests that the headlamp has different brightness levels or light modes that can be adjusted to suit different needs or preferences.
- Telescope headlamp: This could mean that the headlamp has a telescopic feature, allowing you to adjust the angle or focus of the light beam.
