CALLTEL WL428-DH

2016 hot sales binaural wireless bluetooth call center headset with microphone bluetooth headset bluetooth earphone

Specifications

Specification:

Bluetooth Specification: CSR V4.0 system

Distance: up to 18m    

Normal charging time: 2hours   

Talk time: 12 hours from 120mAh battery      

Stand by Time: 300 hours

MIC Transmit parameter

Microphone: upper Noise cancel

Frequency range: 100 Hz –10 kHz

Sensitivity : -39 dB V/Pa ±2 dB(0db=1V/Pa.1kHz)

Distortion: <1%

Receive parameter

Speaker: dynamic

Frequency response: 100 Hz –6.1 kHz

Sensitivity: 110dB ±3dB in 60Mv AT1000HZ

Input impedance: 32ohm±15% at 1000hz

Maximum output: 118 dB SPL

Total harmonic distortion <2% at 1khz 60mv

General parameter

High temperature resistance :  +50°C+/-2°C

Low temperature resistance :  -20°C+/-2°C

Weight: 45g

Charging cable length :80cm