M1 Stereo Sound Running Sports Bone Conduction Bluetooth Earphones With Microphone1. Bluetooth version: 5. 0 version 2. Bluetooth distance: about 10 15m 3. Bluetooth protocol: A20P AVRCP HSP HFP 4. Speaker type: bone conduction vibrator speaker 5. Life time: about 6 8h 6. Charging time: about 2h 7. Battery capacity: 150mAh 8. Charging port: USB 9. Waterproof rating: IPX5 10. Weight: about 25g Features: 1. Bone conduction technology, sealed speaker, no sound leakage holes 2. Induction touch button, no pressure operation, to avoid

40HQ: 1691 cartons * 200 pcs = 338200 pcs

memory card / headphone / audio connection

Speaker Power 2*5W

Headphone capacity: 37mAh

One Package Size 27cm * 8cm * 8cm / 10

Compatible with most QI standard phones

Style: straight

light-emitting diode

Shape: round

Model: UG17H2

Speaker impedance: 8mm diameter

Sensitivity: -40dB+/-20dB=1V/Palkhz