■
Basic Specification
Cable Length
：
610mm
Weight
：
14. 3g
（
bare unit without packaging
）
Charging interface
：
Micro USB
Button
：
three
（
previous/volume up + next/volume down + power button
）
Battery Specification
：
3.7V/55mAh*2
Charging specs
：
Micro USB
Charging input
：
5V/1.0A
Charging indication
：
Red LED light is on all the time
Charging time: around 2 hours.
Successive talking time
：
about 5-6 hours
Volume control
：
16 ranks, 3dB variation in each rank
Battery indication during working period: 100%-15%: blue LED light indicates the working status;
15%-5%: Red LED light indicates working status; Below 5%: Red LED light blinks quickly.
Working temperature
：
-20
～
70
℃
during charging period.
Storage temperature
：
-40
～
80
℃
■ Speaker and MIC
Speaker diameter:Φ10mm
Impedance: 32Ω
S.P.L:110dB S.P.L.at 1KHz
Rated power: 100mW
Frequency Response: 100Hz-9000Hz
MIC type
：
Capacitive
Microphone Unit:Φ4*1.5mm
Sensitivity
：
S.P.L:-42±3dB
Impedance:≤2.2KΩ
Frequency Response: 30-16,000HZ
Operating voltage: 4.5V
