Built-in 220mAh lithium battery, support 15 hours continuous play
Support emergency charging mobile power bank
40mm wool cone basin + 16-core double magnets trumpet + stainless steel bass vibrating diaphragm
Adopt CSR3.0 Bluetooth module, super impact-proof and shake-proof performance, IPX5 waterproof
Support TF card, plug and play, with FM radio, support quick charge, data transmission
Simple Bluetooth connection, support hands-free call
Portable design, easy installation
Necessary for cyclists and backpackers.