100points
99points

Coumi BT-857S

Coumi BT-857S
vs

Coumi BT-857S review: specs and price

Coumi BT-857S

Why is Coumi BT-857S better than the average?

  • Battery life
    ?

    24hvs8.73h
  • Bluetooth version
    ?

    5vs3
  • Number of microphones
    ?

    2vs1.43
  • Lowest frequency
    ?

    20Hzvs74.05Hz
  • Highest frequency
    ?

    20000Hzvs16466.67Hz
  • Price (global median value)
    ?

    35.96 €vs147.9 €

Price comparison

Design

1.has stereo speakers
Coumi BT-857S
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
2.sweat resistance
Coumi BT-857S
Resistance to sweat makes it ideal for use while doing sports.
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.
5.has an in-ear form
Coumi BT-857S
The in-ear device is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. It is inserted in the ear canal itself and blocks out a lot of environmental noise. It has stronger bass tones and is unlikely to fall out of the ear.
6.Has a coil cable
Coumi BT-857S
A coil cable offers more flexibility, as it can be further extended when in use, as well as retracted to take up less space when not in use.
Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.
8.has an on-ear form
Coumi BT-857S
This device comfortably rests on top of your outer ears. As it doesn't block out everything from the outside world, it's preferred in places like office environments and recommended for outdoor activities.
9.can be folded
Coumi BT-857S
Foldable devices are easier to transport and take up less storage space.

Sound quality

This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.
The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
4.has a neodymium magnet
Coumi BT-857S
Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.
The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

Microphone

These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
More microphones result in better sound quality and enable the device to filter out background noise.
A wind noise reduction microphone is designed to reduce wind interference, providing sharper audio in windy situations.
The microphone can be attached or detached if necessary.

Power

The device's battery life (when in use) as given by the manufacturer. With a longer battery life you have to charge the device less often.
The battery can be recharged and used over again.
The time it takes to fully charge the battery.
An indicator shows you when the device has low battery.

Connectivity

1.Can be used wirelessly
Coumi BT-857S
Wireless devices allow users more freedom of movement.
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
The device can connect at a greater distance via Bluetooth or infrared to another device.
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
Device supports fast Bluetooth pairing using NFC so it can communicate with other devices over Bluetooth. You can fastly pair devices without entering a code by simply holding one device next to the device with which it is to be paired.

Features

A headset is one headphone or pair with a built-in microphone. Headsets can be used for apps that require communication i.e. Skype, games with voice chat, mobile phones, etc.
2.has voice commands
Coumi BT-857S
You can use your voice to control key functions of the device and you can easily access your device without pushing any button.
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
4.has an accelerometer
Coumi BT-857S
An accelerometer is a sensor used to measure the linear acceleration of a device. A common application is detecting when a device changes between vertical and horizontal positions.
There is a control panel on the cable, so you can easily operate the device without having to interact with it.
6.is reversible
Coumi BT-857S
This is a monaural device which could be used for both ears.
7.has a mute function
Coumi BT-857S
The device has an option to mute/unmute a conversation directly from the device.

Miscellaneous

1.Price (global median value)

35.96 €

Updated on Fri Oct 22 2021
The global median price is determined by calculating the median value of all the prices available for a product, taking into account all markets.

Price comparison

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