Mechanically it is well designed. The rubber band is long enough and can be easily adjusted as needed. It shines well and stays on the head, so I'm satisfied. Only the front part is a little heavier, so you can feel it when you move your head quickly. And the rear red light is weak. I'll probably get another one for my bicycle.

Mechanically it is well designed. The rubber band is long enough and can be easily adjusted as needed. It shines well and stays on the head, so I'm satisfied. Only the front part is a little heavier, so you can feel it when you move your head quickly. And the rear red light is weak. I'll probably get another one for my bicycle.

Mechanically it is well designed. The rubber band is long enough and can be easily adjusted as needed. It shines well and stays on the head, so I'm satisfied. Only the front part is a little heavier, so you can feel it when you move your head quickly. And the rear red light is weak. I'll probably get another one for my bicycle.

Inexpensive working headlamp, if the buyer has extra 18650 batteries. There is a problem with the lens of the lamp in the form of patchy blurs, the light output is maybe half of what was promised.

Inexpensive working headlamp, if the buyer has extra 18650 batteries. There is a problem with the lens of the lamp in the form of patchy blurs, the light output is maybe half of what was promised.

Inexpensive working headlamp, if the buyer has extra 18650 batteries. There is a problem with the lens of the lamp in the form of patchy blurs, the light output is maybe half of what was promised.