Color: YR-04 black, YR-04 pink
Transmission range: 10 meters
Function: call function, support music, multi-point connection
Custom processing: Yes
Bluetooth protocol: 5.0
Channel: stereo
How to use: Head-mounted
Single or dual ear: bilateral stereo
Frequency range: 20HZ-20KHZ
Charging voltage: 3.7V-4.2V
Charging current: 150-200mA
Sensitivity: 88DM
Signal to noise ratio: 90db
Speaker impedance: 32Ω±15%
Speaker specifications: φ30mm
Operating range: 10m
Charging time: 2H
Use time: 10H (60% volume)
Battery capacity: 200mAh lithium battery