Don't change the channel -- Tune In's ergonomically designed collar rests on your neck for up to 12 hours of playtime. These earphones let you play music from your device via Bluetooth technology. Use it during workouts, jogging, or commute. The neckband style makes sure that you won't lose your earphones no matter what you do. IThe convenient controls are smartly placed on the neckband so you won't have to use your phone for changing tracks and picking up calls. t's IPX4 rated too, so it will still work when you're sweating or under rainy weather.