Hoco EQ4 Opened Ears TWS Headset, Black

• Bluetooth 5.3; chip: JL AC6973D4• Battery capacity: charging case 500mAh; Headset 110mAh• Use time: 12 hours; Standby time: 300 hours• Size: 98*66.5*30mm; Total weight: 87g• Fully open air conduction TWS wireless bluetooth headset• support master-slave switching, summon Siri"• Charging time of charging case: about 2 hours• Support protocol: Headset Hands free A2DP AVRCP• Transmission range: 10m• Transmission frequency: 2.4GHZ• Charging voltage:DC5V