Solution: JL6973D4 Bluetooth version: 5.3 Earphone battery: 70mAh/with protective board Storage battery: 320mAh/with protective board Charging time: 2 hours Earphone single working time: music 6H/call 5H Bluetooth distance: ≥ 10M Speaker specification: Ø 16.2mm 20 ohms Standby time: 150 days Material: PC+plastic 1. Hall switch, connect immediately after opening the lid 2. Non in ear open design, cloud like wearing is lighter, more comfortable, and more stable 3. Adopting a 16.2MM dynamic driver speaker, it effectively and excellently completes the transmission of sound information, restoring good sound quality in high, medium, and low frequencies 4 independent working hours can reach 6H+25H high-energy battery life in the charging compartment, without worrying about power outages