Playback- Leave all charging worries at bay as the Rockerz 255 Pro+ comes with a humongous battery back up of upto 40 hours(@50% volume ASAP Charge- With a few minutes of ASAP Charge you can get upto 10 hours of audio time by charging them for only 10 mins. Drivers- The unbeatable boAt signature sound shines through no matter what are you playing courtesy its 10mm drivers. IP Rating- Rockerz 255 Pro+ are perfect for the outdoors and daily workout as they are IPX7 rated. Controls- Its multi-function Integrated controls lends an intuitive listening experience with volume increase and Decrease and Stop and Play buttons Dual Pairing- This neckband features dual pairing so that you can connect 2 devices at once. Live a wireless life with advanced BT 5.0 technology.