P9 Max headphones
P9 Max Earphones Wireless Bluetooth Headphones TWS Earbuds Subwoofer WithMicrophone Handfree Gaming Headset Noise Canceling Bass
Transmission distance : 10m
Battery capacity: 400mAh
Sensitivity: 105+3db
Speaker diameter: 40mm
Playing time: about 10 hours
Standby time: about 120 hours
Charging time: about 2 hours
Built in microphone: Yes
TFcard: Support
Charging port: USB
Song switching: Support (short press the function key)
Volume Adjust: Support (long press the function key)
Answer a call/hang up: Support (short press the function key)
Audio I/O Interface: Support