[tigerdirect.com]Shure SE110 Sound Isolating Earphones ($42.99, 배송비 갯수에 따라 다름)50

• Speaker Type: Balanced MicroSpeaker
• Sensitivity (1mW): 113 dB SPL/mW
• Impedance (1kHz): 27
• Frequency Range: 22Hz – 17.5kHz
• Cable Length/with Extension: 18 in. / 45cm (54 in. / 136cm)

Features

• Balanced MicroSpeaker
  Developed for the discerning music lover, Balanced MicroSpeakers deliver optimized audio for a vivid and detailed listening experience. Rediscover your favorite music—richer and more lifelike than you’ve ever heard it.
• Sound Isolating Design
  Comfortable sound isolating sleeves block over 90 percent of ambient noise. Combined with the compact design and a modular cable, interruptions from the outside world are minimized, enabling you to focus on your music.
• Sound Isolating Sleeves
  The role of the included sound isolating sleeves is twofold: blocking ambient noise and ensuring a comfortable customized fit. Because every ear is different, the Fit Kit includes three sizes (S, M, L) of the Flex and Black Foam Sleeves. Experiment with the size and style that creates the best fit for you—a good seal is key to optimizing sound isolation and bass response as well as maximizing comfort during extended wear.
• Modular Cable
  Based on extensive user feedback, Shure engineers have developed a detachable cable solution to enable unmatched personal customization. An included 3-foot cable allows you to tailor your experience depending on activity and application.
• Carrying Case
  A durable and compact carrying case is included to provide a convenient, tangle-free solution to store and travel with your earphones.