Product model: F9 V5.0
 

 Product color: black
 

 Bluetooth version: V5.0
 

 Support protocol: HSP/HFP/ A2DP/AVRCP
 

 Working distance: straight line about 10M
 

 Song listening time: about 4-5 hours (single use when fully charged)
 

 Talk time: about 4-5 hours (single use at full power)
 

 Charging compartment battery capacity: 300mAh
 

 Charging compartment charging time: about 2H
 

 Headphone battery capacity: 50mAh*2
 

 Headphone charging time: about 2H
 

 Supports one-key control, binaural HD calling, automatic power-on pairing, etc.