Bicycle Speaker Material list

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ON/OFF switch with waterproof rubber cap

5.5×2.1mm DC Power Supply Female Panel Mount Connector

18650 5-24V Input 21V Lithium Battery Board with Balance/Charge Protection

DC Charging Power Cables and LED Light Kit for Battery Board

18650 3.7V 3350mAh Rechargeable Li-Ion Cell 5 REQUIRED

Wago Lever-Nuts Compact Connectors