AWEI TZ12 Air Conduction Bluetooth Headset OWS Ear Hook Wireless Headphone Waterproof Earphone - Black •Bluetooth 5.4 Connectivity: Ultra-low latency keeps synchronized with audio and video,convenient to keep in contact with your teammates all the time •Compact Size: The compact body fits easily in your pocket,convenient to carry when traveling,cycling,etc •Creating Wonderful Music: Adopts advanced 14mm dynamic sound unit to provide dynamic stereo sound quality •Ear Hook Design: No need to jam the earphones into the ear to better protect the hearing. Unlike in-ear headphones,it allows you to keep in touch and understand the surrounding environment to ensure safety •Waterproof Earphones: Professionally protect the interior from the influence of water and sweat and prolong the service life •Specification: •Bluetooth version: V5.4 (Chip: AB5656C2) •Channel system: Stereo •Supported protocols: HSP,HFP,A2DP,AVRCP •Battery capacity: Earphone: 50mAh * 2 (without protection board,earphone board lithium battery protection IC); Charging bin: 300mAh (with protection board) •Music playback time: 8h •Talk time: 7h •Charging time: 1h •Speaker diameter: 14mm •Speaker impedance: 32Ω •Charging input: DC 5V •Sensitivity: 115±3 DBDB •Bluetooth operating frequency: 2402-2480MHz •Frequency response range: 20HZ-20KHZ •Maximum transmission distance: 10M •Voice prompt: Supported •Multi-point connection: Not supported •Wearing method: Ear hook •Waterproof level: IPX4 waterproof and sweatproof function (earphone only,charging bin is not waterproof) •Charging interface: Type-C Package included: •1 Pair x Earphone •1 x Charging Bin •1 x Charging Cable •1 x English and Chinese User Manual •Other things not included