Looks to KillSleek, sexy lines, a smooth satin finish, and 12 show stopping color combinations take any MP3 player to the next level. A new, meticulously crafted sound chamber designed to perfectly resonate the wide range frequency response from our unparalleled Japanese Titanium drivers.Sound to ThrillYou will enjoy a rich, dynamic soundstage that accentuates every detail of your music, with crisp, tight clarity and booming digital bass for every genre in your collection.Ultra-Rugged Durability The J2s incorporate thicker, premium quality cabling and heavy-duty flexible joints built to withstand rigorous daily use and carry you through the urban jungle without missing a beat. Supreme Comfort and Noise Isolation Forget about those uncomfortable stock earphones that came with your mp3 player. The J2s sleek, smooth shape and 3 sizes of soft, silicone cushions ensure a perfect fit and seal inside your ears, providing sound isolation from exterior noises and allowing you to comfortably enjoy your music for as long as you like. Features: ? Sleek Design? Smooth Finish? 12 Color Combinations? Redesigned Sound Chamber? Thicker Premium Cabling? Heavy-Duty Flexible Joints? Includes 3 Sizes of Soft Silicone Tips Specs: ? Magnet: 10mm Japanese cobalt magnet? Impedance: 14 ohm +/- 15% at 1 kHz? Frequency Response: 20Hz-20kHz? Ear Cushion: Silicone? Cord Material: Non-Migration PVC? Cord length: 122cm? Cord diameter: Dia. 2.05mm to 1.8X2mm? Plug Type: Dia. 3.5mm Stereo Gold Plug (S28)? Normal Power Handling Capacity: 3mW - 10mw? Mxx Power Handling Capacity: 60mw? Speaker Sensitivity: 106 +/- 3 dB at 1 kHz S.P.L? Channel Balance: 3 dB at 1 kHz  Frequency Response Chart for J2 Drivers: