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（Materials required）配件表

board木板5.4mmX5.4mmX2mm2，5.4mmX5mmX2mm2，5mmX5mmX2mm*2。

Full range speaker 4Ω3W全频喇叭 https://goo.gl/kvi8SU

Mono Bluetooth power amplifier board单声道蓝牙功放板https://goo.gl/SpNb5Q

Passive diaphragm 低音震膜https://goo.gl/RPrFCo

lithium battery 锂电池https://goo.gl/V7oaT2

TP4056C harging module 充电模块https://goo.gl/fXGMrJ