OXoqo IPX4 In-Ear Wireless Sport Headphone with Mic - Red Bluetooth V4.1 Offers a easier, faster, high quality stereo music and clear speech within 66 feet, CVC 6.0 noise cancellation technology Creative design: the headphone is only 19g makes your ears no pressure Incredible playtime: the rechargeable lithium-polymer battery provide an impressive 6-8hours playtime on a single charge time around 2hours oxoqo headphones is rated IPX level 4 and can withstand dripping sweat, little rain, even a splash from your sports drink IPhone 6, 6s, 5, 5s, iPod, iPad mini, Samsung galaxy S6, S5, S4, S3, note 4, 5, android smart phones, tablets, Bluetooth-enabled music players