Name: ES34 Pleasure Wireless Headset,Bluetooth version: 5.0, chip: Jerry 6936D,Battery capacity: Charging case: 400mAh, single headset: 55mAh,Charging time: Charging case: 2 hours, headset: 1.5 hours,Calls/music time: 5 hours,Standby time: 100 hours,Total weight: 41g,Features: Supports master-slave switching, touch function, summon Siri,