LasKKit Sound DIY 3W Bluetooth Speaker

This is small simple 3W Bluetooth Speaker you can print and assembly.
Last several months I worked on design and hardware, try a lot of speakers and amplifiers.
Next components are used:
1. 3W 40mm 4Ohm Speaker
2. Bluetooth Audio Modul ZAD-C1 mono 5W
3. LiPo charger with TP4056
4. 500mA 3.7V 503035 LiPo battery
5. 2kOhm 0603 resistor
6. 3A 250VAC Rocker switch
7. 4x M3x50 screws + 4x M3 nuts
8. 2 color LED with common anode

You can find an instructable here: https://www.instructable