ex-01 Bluetooth 4.1 Business Hanging Ear Bluetooth Earphone(Black)

1. How to use: hanging ear type2. Transmission range: 10 meters3. Channel: stereo4. Frequency: 2.4-2.48GHz5. Charging time: 2 hours6. Talk time: 5-6 hours7. Standby time: 160 hours8. Dimensions: 30x19x104 mm9. Weight: 65 grams10. Non-ear design, long-term wearing does not hurt the ears