The bracelet is made of PLA and is waterproof. It can be used as a pedestrian or cyclist, but it would also be very useful to carry it in the car to use it as a beacon in case of a breakdown.

Anet

A6

Doesn't Matter

Yes

0.2

40% - 60%

The fit of the cuff with the arm is fine for the average size of an adult. If necessary, by applying heat to the PLA -with care if the electronics have already been assembled- the diameter of the bracelet could be closed or slightly opened.

http://j-rpm.com/2022/04/brazalete-led-recargable/