M4 TWS Wireless Bluetooth 5.1 Earphone Earbuds Waterproof Digital Display HiFi Music Calling In-ear Headset

• Built-in Bluetooth 5.1 chip, stable and fast connection, low power consumption
• IPX5 dustproof and waterproof, no longer have to worry about water and sweat
• Press lightly on the button for multi-function operation
• The charging case has a digital display to show the remaining power
• Graphene fiber diaphragm moving coil horn, HiFi stereo sound quality

Specification:

• Bluetooth solution: Bluetooth V5.1
• Product chip: JL 6973
• Standby time: 60 days+
• Earphone working time: 7-8 hours(the charging compartment can charge the headset more than 3 times)
• Charging time: about 1.5 hours
• Communication distance: barrier-free 10-15 meters
• Earphone battery capacity: 50mAh
• Charging box battery capacity: 500mAh (with IC protection board)