Binaural Mini Cylindrical Headphones

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.