The Powerbeats Pro totally wireless earphones offer high performance with powerful sound and noise isolation, and were made with elite athletes in mind. The adjustable earhooks provide stability during activity and the water resistant design repels sweat. They feature up to nine hours of listening time and come with a charging case that can provide 24 hours of charge. When battery's low, Fast Fuel enables you to charge for five minutes and get one and a half hours of playback. To increase convenience, there are volume and track controls on each earbud, voice capability with some devices, and auto play/pause to detect when the earbuds are in use. The Apple H1 headphone chip ensures fast connection and extended range with Class 1 Bluetooth, and the earphones are Hey Siri hands-free voice control capable. They also enable enhanced phone call performance using either earbud.