• Wireless 5.2 connection, faster and more stable signals 
• The charging case has 750mAh large battery capacity, providing long use time
• Auto connection after take out from the case after first time pairing
• HiFi stereo sound quality, shocking bass and clearer calls
• Mini and lightweight, stylish appearance, comfortable to wear

Specification: 

• Bluetooth-compatible version: 5.2 QCC3040
• Headset battery capacity: 3.7V/50mAh
• Rechargeable chamber battery capacity: 750mAh
• Earphone charging time: about 60 minutes
• Charging time of the charging warehouse: about 60 minutes
• Number of times to charge the earphones: 4 times
• Duration of use (call/play): about 30 hours (earphones + charging case)
• Audio format: APTX/AAC/SBC
• Transmission distance: 10M
• Supported protocols: HSP/HFP/A2DP/AVRCP 
• Sensitivity: 101±3@1k, 1mW
• Frequency range: 20-20000Hz
• Impedance: 32Ω