GENERAL FEATURES Under Armour Fabric TechnologyFeaturing two of Under Armour’s unique fabric technologies, UA Sport Wireless Train is no-doubt built for the gym. UA SuperVent lines the outer ear cushions and delivers true breath ability in a light, durable, fast-drying fabric that is removable and hand washable. The Under Armour grip material completely lines the inner headband and ear cushions, providing a soft feel and maximum stability. 16-hour Speed Charge batteryWireless sound that lasts long and recharges quickly. One hour of workout time on just 5 minutes’ charge. Bionic HearingBionic Hearing with TalkThru Technology drops music down and turns on speech-optimized, noise-cancelling mics so you can easily talk between sets without removing your headphones. Bluetooth® wirelessEasy-to-connect Bluetooth® technology delivers cable-free, zero-distraction performance. JBL Charged SoundBold sound tuned for sport with rich bass to crush your workout. Oversized controlsOversized controls with premium fi nishes provide durability and easy access. Rugged durabilityRugged design with an IPX4 rating, these headphones are tested by athletes to withstand sweat, the demands of training and being tossed in and out of your gym bag. Compact TransportRugged metal hinges fold earcups into the headband, and a molded hard case with SuperVent helps protect and dry between workouts