S19 In-ear Wireless Bluetooth Headset Hanging-ear MiNi Headset BT5.0 Feature: 100% brand new high quality Comfortable and safe: bone conduction headset, Bluetooth 5.0 wireless connection, you can listen to music and answer the phone without inserting the ear canal into the receiver, your ears can hear the surrounding sound, a very safe charging room Capacity: 2200 Ma Battery life: the duration of music is about 120 hours / the duration of call is about 150 hours (to be used with the charging cabin) Binaural separation design: the single ear connection can connect 2 devices, the two ears are connected with stereo sound effect, intelligent Bluetooth 5.0 binaural HD call, graphene dynamic unit, and professional three frequency adjustment, which brings shocking innovation Body sound Usage scenario: bone conduction earphone with strong Perspiration resistance is suitable for running, cycling, fitness, mountain climbing, rock climbing and driving Bluetooth version: v5.0 Dual talk, low power consumption Transmission range: about 10m / 32. 81 feet Unicast time: about 2.5 hours Talk time: about 3 hours Charging time: about 1 hour Standby time: 100 hours (150 days when the charging bin is fully charged) Cumulative music duration: about 120 hours (the charging cabin is fully charged) Cumulative call duration: about 150 hours (charging room is fully charged, rechargeable headset: about 25 times) Earphone capacity: 40mA Capacity of charging room: 2200mAh Earphone capacity: 50mah Control type: button control Charging voltage: 5V 1A Package Contents: 1 X pair of bluetooth earphones 1 X charging box 1 X charging cable 1 X User Manual