Wireless in-ear headphones for athletes. With a proprietary design created for athletes, you'll enjoy the most comfortable and secure fit. Just twist and lock - it's that easy. They're guaranteed never to hurt or fall out. Designed with rugged and premium materials, these headphones are extensively tested by professional athletes - built to withstand the most intense workouts. And they're IPX5 certified with advanced nano coating to keep sweat out. Exclusive JBL premium dynamic speaker drivers create big sound, and JBL Pure Bass performance keeps you energized. Train harder with Under Armour Sport Wireless - Engineered by JBL. These wireless, sweat-proof headphones eliminate the distractions of headphone cables. An inline remote control with mic handles volume, tracks, and calls, and works with iOS and Android. A premium MapMyRun membership lets you monitor your performance and progress. Guaranteed never to hurt or fall out, UA Sport Wireless headphones feature legendary JBL Signature Sound with Pure Bass performance to give you the inspiration and motivation to finish strong. Features: Rechargable battery Yes, 3-Button Remote/ Mic Yes, In-ear Yes, JBL Charged Sound Yes, Sweat Proof Yes, Wireless Yes, Hands, Free Call Yes, Carrying pouch Yes, Twistlock Yes, Siri/ Google Now Yes; Specifications: Ear tip: material Rubber; Bluetooth: version 4.0; Driver size: 5.8 mm; Bluetooth profiles: HFP v1.6, HSP v1.2, A2DP v1.2, AVRCP v1.4; Bluetooth transmitter power: 0-4 dbm; Bluetooth frequency: 2.402GHz-2.48GHz; Bluetooth transmitted modulation: GFSK,π/4DQPSK, 8DPSK; Dynamic frequency response range: 10Hz-22kHz; Battery Type: Lithium-ion polymer; Charging time (hours from empty): 2.0; Speed Charging time (hours): 2.0; Talk time (hours): 8.0; Maximum music play time with ANC off (hours): 8.0; Play time (hours): 8.0, Color: Black