The power of freedomPowerful carbon-coated drivers provide the ultimate audio experience to fuel your workout, with Bluetooth technology providing extra freedom to exercise.Touch control with hear-through technologyHear the world outside with just one touch6 Hours of FreedomFeel the freedom of Bluetooh for six hours on one charge with a rechargeable batery and USB charging cable.Weather and water resistantThese headphones can handle your toughest workouts and can be washed off when you\'ve finishedPorts & interfaces    Connectivity Technology  :  Wireless    USB Connectivity  :  Yes    Bluetooth  :  Yes    Bluetooth Version  :  4.1    Bluetooth Profiles  :  A2DP,AVRCP,HFP,HSP    Wireless Range  :  10 m Microphon    Microphone Frequency  :  50 - 8000 Hz    Microphone Sensitivity  :  -42 dB    Microphone Direction Type  :  Omnidirectional Headphones    Ear Coupling  :  Intraaural    Headphone Frequency  :  20 - 20000 Hz    Impedance  :  16    Headphone Sensitivity  :  93 dB    Driver Unit  :  9 mm    Driver Type  :  Dynamic Battery    Battery Type  :  Built-in battery    Battery Technology  :  Lithium Polymer (LiPo)    Continuous Audio Playback Time  :  6 h    Battery Voltage  :  3.7 V Performance    Product Type  :  Headset    Wearing Style  :  Ear-hook, In-ear, Neck-band    Product Colour  :  Black    Headset Type  :  Binaural    International Protection (IP) Code  :  IPX5