Pisen Sports Headphones, Ear-hook Headset Waterproof Single Jack AUX 3.5mm (R100) Pisen Sports Headphones, Ear-hook Headset Waterproof (R100) Pisen R100 3.5mm Sport Earphone Running Headphone with Mic & Sweatproof Earhook Pause/play: press function key once Next song: press function key twice Volume up/down: press +/- Answer/end call: press function key once ​ Specification : Model number: R100 In-line control operating system: IOS Impedance: 16Ω Frequency:20Hz-20KHz Weight: 16g Size: 40.21*60.01*20.52mm Cable length: 1.3m