The recently introduced Radius noise canceling ear-plug type earphones RadHeadphones HP-NLF11 are available in white and black colors. This earphones feature a built-in lithium ion rechargeable battery lasts up to 33 hours of continuous playback once fully charged. The battery is charged via USB and it takes approximately 2 hours for a full charge.

The Radius RadHeadphones HP-NLF11 not only give you an optimal isolation and comfort, but also protects your ears from the damaged caused by turing up the volume in a noisy environment. The noise canceling circuitry reduces up to 82% of the ambient noise within 80 - 1500Hz. Also you can use them as ordinary earphones without the noise canceling function that you can disconnect from the headphones. The battery measures about 30x22x60mm and weighs 34g.

The Radius noise canceling earphones RadHeadphones HP-NLF11 come with three ear tips, a stereo mini plug, a converter for airplane and are available in Japan for approximately $80 USD.