Bluetooth version：Bluetooth V4.1
Charging time：1.5hrs ~ 2hrs
Reception sensitivity：-89db
Effective distance：10m
Talk time：2 hours , Standby time：50 hours
Charging voltage：5V
Capacity：40mA , Material：PU
06 Month Brand Warranty

Bluetooth version: V4.1
Charging time: 2 hours
Reception sensitivity: 108db
Effective distance: 10m
06 Month Brand Warranty

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Bluetooth： Bluetooth 4.2
Transmission range：10M
Signal-to-noise ratio：80DB , Power：5w
Speaker unit：Inner magnetic speaker 
06 Month Brand Warranty

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Bluetooth version：Bluetooth4.2
Charging time：1.5hrs
Reception sensitivity：95db±3db
Effective distance：10 meters
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Brand：JOYROOM
Model：JR-K1
Name：JR-K1 microphone
Reception sensitivity：-42±3dB
working hours：16 hrs
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