[12 Hour Enhanced Battery: In less than 2 hours of charging time the headset provides up to 12 hours of music and 20 hours of talk time one of the highest records for a mini single wireless headset product in the past year Multifunctional Bluetooth Headset: It is a sophisticated and mini in-ear design that is virtually invisible when worn perfect for walking running jogging hiking biking gym driving working relaxing and more Tailored: The wireless Bluetooth earbud is designed according to ergonomics and the it is smallest Bluetooth earbud in currently Fits either ear wear the bud on right ear for better call clarity "One Earbud is Not Enough: It doesnt matter with a simple operation you can get STEREO SOUND through any two earbuds paired and used to meet your needs for binaural headphones just order 2pcs (See Product Description as Operating Instructions below)" Easy Operation: With multi-function buttons you can easily answer/end calls play/pause music and switch songs (next song)]