Stamina Battery for 25 hours playbackYou don’t need to recharge every day thanks to Stamina Battery, which delivers 25 hours continuous playback. Recharge in just two hours via the rotationally symmetrical USB Type-C terminal, which accepts the cable plug from either side for quick and easy connection.Fast Charge in minutes If you realize the battery’s low and you’re heading out, Fast Charge will push four hours’ worth of wireless playback into your headphones in just 10 minutes. Enough to get you to work or school with that playlist you’ve been looking forward to.The biggest drivers in its class The S3wireless packs some serious hardware with extra-large Φ 40 mm (1 9/16˝) dynamic drivers producing exhilaratingly deep bass and a clear mid-range for vocals. Support for the high-quality AAC wireless audio codec enhances a sense of resolution, and is ideal for use with the iPhone.Folding design for easy portabilitySwiveling and folding mechanisms tuck the housings inside the headband for easy storage in your bag, no cable mess. Slim profile lets it slip into narrow briefcases or handbags, so you really can have music wherever you go.Connect two devices at once Multi-point Function lets you wirelessly connect two devices at once. You can listen to music from your tablet while being connected and ready to take incoming calls from your smartphone.Note: Only one device can make/receive calls or play audio at the same time.Hands-free wireless music and callsEverything you need for hands-free control, such as intuitive volume adjustment and track selection, is via a single multi-function button on the housing. Voice Assistant or Call Reject activates when the center button is pressed and held; Play/Pause and Call Accept/End with a single press (center); and Redial with a double press (center). Volume Up/Down is performed with a press up/press down gesture on either end of the button, while pressing and holding up or down skips tracks forward or back.Access your voice assistant Press and hold the center button to activate the voice assistant on your Google Assistant or Siri enabled smartphone. Once connected, your assistant will respond to a variety of commands without you needing to reach for your device.Bluetooth® 5.0 wireless connectivityThe S3wireless incorporates the latest Bluetooth® 5.0 wireless technology. Once you have registered the headphones to your smartphone, it will connect automatically when selected from a list of available devices shown on your touchscreen.