Description Product description1. [Latest Bluetooth 4.2 Technology]: The advanced Bluetooth CSR8635 chipset gives you faster transmission and lower latency. The radio range is up to 10 m. Enjoy uninterrupted phone calls and music. Compatible with iPhone, iPad, Samsung Galaxy series, Sony Xpiria, Google Nexus, Android phones, tablets, etc.2. [Lightweight and Sweatproof]: The unique design eliminates annoying cables so that they dont get tangled while running, jogging, cycling or exercising. The ergonomic design of the headphones ensures a perfect fit. Even if you run or jump, the headphones will not fall on your ears. Absolutely sweatproof and designed for first-class comfort.3. [SUPERIOR Hi-Fi STEREO]: The headset provides crystal clear stereo sound in Hi-Fi stereo quality. Great for soundtracks, audio books, and relaxing music. Get rid of the noise and cables and enjoy the purest music4. [Long battery life]: The new and improved lithium polymer battery can continuously play up to 12 hours of music or 13.5 hours of phone calls, enjoy uninterrupted music enjoyment and the charging time is only 2.5 hours. Perfect gardening for pruning, exercising, jogging, fitness, etc. Enjoy music on the go all day5. [Scope of delivery]: Marathon headset [2. First generation], 2 ear pads, USB charging cable, transport case and operating instructions.