Sennheiser HD 4.40 BT
31 facts in comparison
Folding devices are good for transporting as they take up less space in your bag.
The cable is designed to minimize tangling.
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
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Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power.
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An indicator shows you when the device has low battery.
The battery can be recharged and used over again.
The battery is removable and can be replaced by the user if broken.
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Wireless devices allow users more freedom of movement.
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
The device can connect to WiFi.
Meters OV-1 Bluetooth
These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
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