Features:
• 2-way design allows you to enjoy 2 different sound effects using the same earphone; the isolation system is used for blocking noises from outside; the big earbud could be used to hear the necessary outside warnings such as; sirens, important phone calls, and etc. 
• Acoustic Sealing Sound Isolation Technology that blocks unwanted outside noise for high intensity listening
• Japanese high gauss ultra high power neodymium magnet technology
• Supports pro stereo and simulated 3D multi-channel surround sounds (for music that has surround sound features)
• Super-Light In-The-Ear Headphones - Made with super light anodized aluminum.
• Firm and soft silicone ear buds that covers the earphone for comfort
• The bigger side of the earphone is able to simulate 3D stereo sound quality
• Stylish and unique design Stereo Earphone
• Premium sound quality and superior bass response
• Extra Light weight compatible with portable audio devices
• Compatible with : iPod / iPod Mini / iPod Nano / iPod Shuffle / iPod Video/ PSP / MP3 / CD Player, all types of audio devices with 3.5mm headphone jack
• Rubber coated wires for long lasting durability
• 3.5mm universal Gold Plated connector

Spec:
• Frequency response band: 130HZ-16KHZ
• Impedance: 32ohms
• Frequency response: 97db(1kHz/1V rms)
• Speaker diameter: 15mm, The other:9mm
• Unit size: 123 cm
• Package size: 16*9*2.7 cm