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
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