Like LED lights, optical fiber can be made with different colours as well.
The minimum order quantity is 1,200pcs. The production time is 1 month after sample approval.
We have 2 options to charge the battery.
If the battery box is hidden inside the sweatband, we simply change the battery.
If the battery box is hidden in the bottom of the peak, battery can be charged by USB. A cable will be provided if this model is chosen.
For USB charging model, battery will last for approx. 2 hours and can be recharged up to 400 times.
Optical fiber can now be located in the sandwich part of the peak.