• 120mah large capacity battery • Simultaneously connect two phones • Magnetic Design • Waterproof earphones for swimming apple，sony，iphone，Samsung，HTC m8 m9 A9，Galaxy etc.• Up to 10 hours of listening time，Plus up to 1-2 weeks of standby time on a full 2-hour charge for extended operation.• Provides protection from rain， dust， debris and sweat.also for swmming，running water proof protection• Bluetooth4.1 compatibility With A2DP， AVRC， HFP and HSP profiles， along with aptX and AAC codecs， for wireless streaming of sound.• Rugged， military-grade and IP7 waterproof constructionPackage Included: 1x U2 Headset 1x USB Cable 1x User Manual