Main Features:
Support stereo music playing
Support the cell phone incoming call, hanging up functions
Support binaural call
Can be used in single mode or twins mode
Support Siri/ voice assistant
Auto Power On/Off
Music playing time: 3.5 hours
Talking time: 3 hours
Specification:
Bluetooth Chipset: JIELI AC6963 (Bluetooth Version 5.0)
Battery capacity: 40mAh for earphone; 300mAh for charging box
Working distance: ≥10M
Charging time for earbuds: 1.5 hour
Earbuds size: 24mm x 19.5mm x 25.5mm 
Charging box size: 72mm x 40mm x 31mm
USB charging port: micro USB
Waterproof level: IPX4
Color：black, white, pink