Introducing the first closed-type Fontopia® headphones, designed to reduce outside noise for high-intensity listening, and to help generate powerful, resonant bass response. So exercise, dance, or skate with the MDR-EX51LP Fontopia headphones. Featuring a super-light in-ear design for a snug, comfortable fit that eliminates the headband, super-small 9 mm drivers, and soft, silicon earbuds. These headphones were created to enhance your on-the-go listening. 2 sizes of earbuds are also included.

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/mã 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