Electronic components:
PCB de 3.7V with bluetooth 2.1
(Dual RGB LED, USB B-type battery charger, On/Off Switch)
Driver: 40mm, 3W & 4Ω
Lithium Battery: 630mAh & 3,7V

Acoustic components:
Acoustic fabric

3D Printing equipment & materials:
FDM Zortrax
HIPS