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Defender FreeMotion B551 (63551)

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One of the most affordable models of wireless on-ear closed-type bluetooth headphones with a built-in microphone. They feature an elegant, discreet design that goes well with clothes of the most styles and trends. The adjustable plastic headband ensures that the design fits the anatomical features of the user's head and creates a moderate clamping force, which is quite enough for a secure fit. Soft, wrap-around type ear cushions, finished with delicate artificial leather, guarantee good passive noise isolation and are comfortable for long listening sessions. The Defender FreeMotion B551 headphones are connected to the source device using the bluetooth 5.0 wireless interface, providing improved connection stability and impressive energy efficiency. Dynamic drivers with a diameter of 40 mm c...an reproduce the full frequency range from 20 to 20,000 Hz (according to the manufacturer) and provide a loud and slightly bass sound. The built-in battery provides up to 10 hours of active work, and when it is discharged, listening can be continued using a cable analogue connection to the mini-Jack 3.5mm connector.
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Defender FreeMotion B551
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Defender FreeMotion B551
FreeMotion (wireless)detachable cableBluetooth 5.0
Colour
Connection and design
Designoverhead, closed
full size Over-Ear
Connection typecombined
Connectionmini-Jack (3.5 mm)
Bluetooth v 5.0
Plugstraight
Cable supplysingle-sided
Range10 m
Cable typeround
Detachable cable
Specs
Frequency range20 – 20000 Hz
Sensitivity105 dB
Speaker size40 mm
Emitter typedynamic
Microphone specs
Microphonebuilt into the case
Frequency range20 – 16000 Hz
Sensitivity-58 dB
Features
Volume control
Power supply
Power sourcebattery
Operating time (music)10 h
Charging portmicroUSB
General
In boxadditional cable
Added to E-Catalogdecember 2019
P/N
63551

One of the most affordable models of wireless on-ear closed-type bluetooth headphones with a built-in microphone. They feature an elegant, discreet design that goes well with clothes of the most styles and trends. The adjustable plastic headband ensures that the design fits the anatomical features of the user's head and creates a moderate clamping force, which is quite enough for a secure fit.

Soft, wrap-around type ear cushions, finished with delicate artificial leather, guarantee good passive noise isolation and are comfortable for long listening sessions. The Defender FreeMotion B551 headphones are connected to the source device using the bluetooth 5.0 wireless interface, providing improved connection stability and impressive energy efficiency. Dynamic drivers with a diameter of 40 mm can reproduce the full frequency range from 20 to 20,000 Hz (according to the manufacturer) and provide a loud and slightly bass sound. The built-in battery provides up to 10 hours of active work, and when it is discharged, listening can be continued using a cable analogue connection to the mini-Jack 3.5mm connector.

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