Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
2.has a detachable cable
With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.
Resistance to sweat makes it ideal for use while doing sports.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
6.travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
3.has passive noise reduction
The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.
4.sound pressure level
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
5.has active noise-cancelling (noise control)
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.
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.
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.
2.has a rechargeable battery
The battery can be recharged and used over again.
The time it takes to fully charge the battery.
4.has a battery level indicator
An indicator shows you when the device has low battery.
5.has a removable battery
The battery is removable and can be replaced by the user if broken.
1.Can be used wirelessly
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.
3.has a 3.5mm male connector
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
4.maximum Bluetooth range
The device can connect at a greater distance via Bluetooth or infrared to another device.
5.supports Bluetooth pairing using NFC
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.
The device can connect to Wi-Fi.
1.can be used as a headset
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.number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
3.has a noise-cancelling microphone
These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
4.has an in-line control panel
There is a control panel on the cable, so you can easily operate the device without having to interact with it.
5.Has voice prompts
With voice prompts, you will automatically receive information via audio messages – for instance, you may find out that the battery is running low, and it's time to recharge the device.
6.has a mute function
The device has an option to mute/unmute a conversation directly from the device.
It's the 'loudness' of the sound that the microphone can pick up.
2.lowest frequency mic
The lowest frequencies that the mic can pick up well. Better for recording bass. If a microphone is going to be used for speech, a voice microphone, it must have great gain for bass, since human voice is in the low frequencies.
3.highest frequency mic
The highest frequencies that the mic can pick up well. Better for recording treble.