An indicator shows you when the device has low battery.
12% have it
16. number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
Parrot Zik Sport: 8
17. has a 3.5mm male connector
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
83% have it
18. Bluetooth version
Jabra Elite Active 65t: 5
19. has an on-ear form
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.
23% have it
20. has a rechargeable battery
The battery can be recharged and used over again.
14% have it
21. has a removable battery
The battery is removable and can be replaced by the user if broken.
6% have it
22. 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.
4% have it
23. longer battery life
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.
Sennheiser PXC 480: 50h
24. charge time
The time it takes to fully charge the battery.
Sony Xperia Ear Duo: 0.46h
25. has an open-back design
The device is designed in a way that allows sound to go out through the back of the ear cups, which usually have vents or perforations. This design provides very natural and accurate sound.