Bluetooth 5.3; Chip: JL AC6973 Battery capacity: charging case 500mAh; Headset 60mAh Use time: 6 hours Size: 96*55*30mm; Total weight: 75.2g OWS open headset, not in-ear Support master/slave switching, summon Siri 7 days replacement warranty বিক্রয় ও শিপমেন্ট: MNK SHOP