Playtime: 12 HoursBattery Charging Time: 3.5 HoursBluetooth: 4.1Bluetooth® Range: 15MMicrophone and wireless controlsDriver Size: 40mmFrequency Range: 20Hz~20KHzEliminate all restrictions and experience freedom with the award-winning Positive Vibration 2 Wireless On-ear Bluetooth® headphones. Expertly designed with 40mm dynamic drivers, our streamlined and sustainable headphones deliver exceptional audio clarity while the sleek look complements virtually any aesthetic. Featuring big drivers and precision sound, Positive Vibration 2 offers up to 12 hours of playtime to keep you going all day long.