Playback- Leave all charging worries at bay as the Rockerz 255 Pro+ comes with a humongous battery back up of 60 HoursASAP Charge- With a few minutes of ASAP Charge you can get upto 10 hours of audio time by charging them for only 10 minsDrivers- 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 ratedControls- Its multi-function Integrated controls lends an intuitive listening experience with volume increase and Decrease and Stop and Play buttonsFrequency Range: 20hz - 20khz; Control Type: Voice Control