BL13 Conduction Headphones Bluetooth, 5.0 Wireless Open Ear Earphones, Stereo Surround Noise Reduction Sports Headset For Running Driving Cycling Yoga Features: Conduction: Conduction headphones work through vibration, and the sound is transmitted to your cochlea through the via . Compared with ordinary headphones, hearing damage can be avoided. Bluetooth 5.0: The conduction headset features the transmission distance up to 10m, lower power consumption, faster transmission speed. Smart noise reduction technology, it delivers sound in music or call, even in complicated environment. Application: choice for people who like to exercise outdoors such as running, hiking, bicycling, also for people who wear headphones all day that need to hearing. The loops behind the head, close to the neck, so the size accommodates most customers. IPX5 Waterproof: The conduction headset is to sweat and rain, making exercises . 360 Degree foldable, not easy to deform. Lightweight, comfortable to wear without stress. Long Battery Life: 180mAh large capacity battery, the conduction headset features up to 9-15 hours of music/talk time, and 2 hours of charging time. Product Description: Bluetooth version: V5.0 Radio frequency: 2.4GHz Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 20m Battery capacity: 180mAh Charging voltage/current: 5V/1A Play/talk time: about 11 hours Charging time: about 2 hours Standby time: 180 days Horn impedance: 16mm 32 Mic sensitivity: - 42Db Operating temperature: - 10-50 contain:Headset * 1 Charging cable * 1 Instructions * 1 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.