Bluetooth Headset, Sweatproof V4.0 Wireless Bluetooth Earphones In-Ear Noise Cancelling Headphones Earbuds with Microphone & Stereo for Running Sports with Magnet Attraction (Red) Retail package includes manual, Bluetooth Headset and Magun Aober brand pen. HEAR MUSIC LIKE YOU NEVER HAVE BEFORE : Bluetooth Headphones Featuring latest Bluetooth 4.0and APT-X + EDR audio decode tech, which strengthens the signal to be twice as effective as other wireless headphones. With 33ft (10meters) Bluetooth working range, allowing you the freedom from wireless earbuds and greater flexibility of phone placement proximity STABLE IN-EARS DESIGN: Our Bluetooth Wireless Headphones unique flexible Lightweight design, snug and secure, interchangeable ear hook allows for a quality and comfortable fit for greater stability during exercising, including running, cycling, workout or normal activities PERFECT Hi-Fi SOUND: CVC6.0 noise cancellation technology intelligently filters ambient noise to ensure clearer sound for calls and music playing. Your listening pleasure, comparable to full sized headphones in a convenient lightweight bluetooth headset PAIR WITH ANY 2 DEVICES: Our Bluetooth headphones can pair with 2 different Bluetooth devices simultaneously, such as an iPhone, iPad, Android phone and other Bluetooth enabled devices. This doubles the possibilities for answering calls and enjoying music with your workout headphones, without having to reconfigure between use. This is a great convenience for those who use two cell phone (business and personal), without having to switch headsets every time the other one rings