Hileo Hi70 Ear-Hook Sports Air Conduction Wireless Earphone 1. With Bluetooth-compatible 5.0 technology, fast pairing and stable performance, you can enjoy wireless music listening and HD phone calling voice 2. No need to jam the earphones into the ear, so as to better protect the hearing. Unlike in-ear headphones, it allows you to keep in touch and understand the surrounding environment to ensure safety 3. Lightweight design for comfortable wearing, help to experience unparalleled comfort 4. Waterproof design, no fear of sweat, great for running, hiking, cycling, car driving, business occasion, etc, enjoy superb sound quality instantly 5. Long standby time, continuous talk time of up to 10 hours The headset can be connected to two phones at the same time Soft silicone material is flexible and easy to fold 6. Support intelligent voice prompt in English and Chinese (default is English) 7. Universal support for all Bluetooth-enabled smartphones Specification: 1. Model number: Hi70 2. Bluetooth-compatible version: V5.0 3. Bluetooth-compatible protocol: A2DP, AVRCP, HFP, HSP 4. Bluetooth-compatible wireless distance: 10m 5. Transmission frequency: 10Hz-20kHz 6. Continuous call time: About 10 hours 7. Music time: About 10 hours 8. Standby time: about 140 hours 9. Charging time: About 2 hours 10. Battery capacity: 140mAh 11. Charging port: Type-C