-------------Product Feature---------------- 1, Bluetooth 5.1; Chip: JLAC6973 2. Battery capacity: charging case 300mAh; earphone 40mAh 3. Talk/music time: 5 hours, 200 hours standby 4. Size: 62*40*27mm; total weight: 35g 5. Support leader-follower switching, summon Siri.