Amazon Exclusive sales ENC BT5.1ER/BDR earphones original earphones 8H Battery amplifier smart watch with earphone for running

1. The blutooth 5.1 + ER/BDR 
2. The chip: jie 6976 d 
3. The headset capacity of 35 ma, charging tank capacity of 250 ma 
4. Music playing time: 5-7hours, charging times :3 times 
5.. Speaker unit: φ 10mm 32 ω 
6. Pause/play, volume up/down, up/down 
7. Dual-ear call, automatic pairing after startup 
8. Waterproof level: IPX5-6 
9. The Hi - Fi sound, chip smart noise reduction, 
TYPE C charging port, private patent 
Color: black/white