Overview:

Sony's first closed-type Fontopia® design reduces outside noise for high-intensity listening, helping to generate powerful, resonant bass response. So exercise, dance, or skate with the new MDR-EX51LP/WHI Fontopia® Headphones. Featuring a Super-light in-the-ear Design for a snug, comfortable fit inside the ear - eliminating the headband, Super-small 9 mm Drivers, and Soft, Silicon Earbuds, these headphones were created to enhance your on-the-go listening. Two sizes of earbuds are also included. So move to your music with the MDR-EX51LP/WHI.

Features:

• Super-Light In-The-Ear Design 
• New, Super-Small 9 Mm Drivers 
• Soft, Silicon Earbuds 
• Two Sizes of Earbuds Accommodate A Full Range Of Ears 
• 400 kj/ma Ultra-High-Power Neodymium Magnet 
• Earbud Holder Supplied 

Specifications:

• Fontopia® Headphones In-The-Ear Design fits snugly, yet comfortably inside the ear; eliminates the headband so you can enjoy music while exercising, skating or dancing 
• Sony's First Closed-Type Fontopia Design reduces outside noise for high-intensity listening; helps generate powerful, resonant bass response 
• New, Super-Small 9 mm Drivers are a key enabling technology; ultra-compact drivers produce powerful sound with space left over for the sonic isolation of Sony's newly-designed silicon earbuds 
• Soft, Silicon Earbuds reduce outside noise, provide long-lasting comfort, hour after hour; the earbuds are washable, removable and replaceable 
• Two Sizes of Earbuds accommodate a full range of ears 
• Long-Throw PET Diaphragm or deep, extended bass down to an incredible 6 Hz; low mass for extended high frequency response all the way out to 23,000 Hz 
• 400 kJ/ma Neodymium Magnet for maximum energy in minimum size; ounce for ounce, this high-power Neodymium is far more powerful than conventional Samarium Cobalt or Aluminum magnets; even with the small, 9 mm drivers, Neodymium achieves 100 dB of sound pressure output from a modest 1 mW input power. 
• Oxygen-Free Copper (OFC) Cord for high signal transmission, low noise 
• Stylish, Neck-Chain Cord 
• Gold-Plated Mini-Plug for exceptional corrosion resistance, superb conductivity, low noise 
• Streamlined, Compact Case neatly stores the ear-buds and headphone cord when not in use; vivid purple styling; high-impact case is ideal for carrying in a pocket or backpack 
• New Case Design minimizes cord tangles; partial winding can shorten the effective cord length during use 
• Type: Lateral, In-the-ear, Closed, Dynamic 
• Driver Unit: 9mm diameter 
• Diaphragm: PET, long-throw 
• Magnet: 400 kJ/ma high-power Neodymium 
• Cord: OFC; Neck Chain, 4 feet (1.2m) 
• Plug: Gold-plated, L-Shaped, Stereo Mini Plug 
• Impedance: 16 ohms at 1 kHz 
• Sensitivity: 100 dB/mW 
• Power Handling Capacity: 100mW 
• Frequency Response: 6 - 23,000 Hz
• Weight: 0.1 oz. (4g) w/o cord 
• Supplied Accessories: Compact case, Second set of earpads