1.Bluetooth 4.0 -- With Bluetooth 4.0 technology, it has better performance, and stronger signal.
2.Noise Reduction -- Adopting smart chip, which has hifi coding technology, it can filtering out ambient noise to provide you a HD calling.
3.Dual Connection -- It can be used to connect 2 devices at the same time.
4.Voice Broadcast -- When your cell phone has an incoming call, it reads the phone number. You can press the MFB to answer.
5.Battery Percentage Display -- It supports battery percentage display of the iOS system, so you can know the power status of your cell phone anytime.
6.Wide Compatibility -- It is compatible with most Bluetooth devices, such as cell phone, tablet, notebook, etc.

Specification:
Brand: Fineblue
Model: FX-1
Color: Black/White/Gold/Gray/Wine red
Chip number: ISSC2008S
Bluetooth version: V4.0
Transmit power: Class 2
Working frequency: ISM wave band
Charging voltage: 5V
Transmission distance: 10m
Working voltage: 3.7V
Battery capacity: 55mAh
Speaker impedance: 32±15%Ω
Speaker sensitivity: 100±3dB
Frequency range: 50~20KHz
Rated output power: 3mW
Microphone sensitivity: -42±3dB
Max output power: 5mW
Low power voltage: 3.2V
Standby time: 55 hours
Talk time: 4.5 hours
Music time: 3.5 hours
Charging time: 2 hours
Size: 57*18*15mm/2.24*0.71*0.59in
Weight: 6.5g/0.22oz

Package Contents:
1 x Bluetooth Earphone
1 x USB Cable