CHENGYAN SCIENCE and TECHNOLOGY MH-612B SPORT IPX8 WATERPROOF BLUETOOTH AND MP3 EARPHONE Discussion and FAQ MH 612B

SHENZHEN CHENGYAN SCIENCE & TECHNOLOGY CO., LTD SPORT IPX8 WATERPROOF BLUETOOTH AND MP3 EARPHONE MH 612B

FCC ID Filing: YILMH-612B

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