Under Armour True Wireless Flash Headphones offer a truly cord-free experience. Sport Flex Fit ear tips were designed for training in all conditions. Be aware of your surroundings with Bionic Hearing featuring TalkThru technology to quickly interact with a workout partner. AmbientAware technology lets you hear your surroundings for increased safety. Features: • 25 hours of battery life • Durable aluminum charging case • Up to five hours of playback • Charging case delivers 20 hours of power • Stormproof IPX7 dust and water resistance • 12-month MapMyRun premium membership