Defender FreeMotion B611

Type: wireless; Cable length/radius: 10 ;m; Design: ear, c shackle; Type emitters: dynamic; Speaker diameter: 12 ;mm; Frequency range: 20 – 20000 ;Hz; Sensitivity: 85 ;dB; Microphone: +; Adjusting the volume: +; Connectivity options: Bluetooth / version 3.0 + EDR / ; Battery type: battery / Li-Ion / ; ...

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Table of characteristics

Colorgreen, black, white, blue
Typewireless
Cable length/radius10 m
Characteristics headphone 
Designear, c shackle
Type emittersdynamic
Speaker diameter12 mm
Frequency range20 – 20000 Hz
Sensitivity85 dB
Microphone+
Adjusting the volume+
Connection 
Connectivity optionsBluetooth / version 3.0 + EDR /
Battery typebattery / Li-Ion /