Etymotic hf5 High-Fidelity Earphones BLUE
COLOUR BLUE
superior Sound Clarity, Great Fit and Maximum Noise Isolation 
Etymotic's 5th generation of high-fidelity in-ear earphones. The hf5 delivers a near-perfect music experience, even in high surrounding noise conditions. Like Etymotic's earlier generations of in-ear earphones, the hf5 has unsurpassed noise isolation, so you experience total sound immersion when listening to your music.
The large and small triple-flange and foam eartips included with the hf5 provide 35 dB noise isolation or more (depending on the eartip used), making these earphones the highest-rated product on the market for passive noise-canceling earphones, and twice as much as active noise-canceling headphones. Research has proven that listeners choose lower levels when earphones seal the ear canal. With high noise isolation, you won't need to turn the music up as loud to hear every nuance of your favorite artists, protecting your hearing. Once you obtain a proper seal in the ear, watch the world disappear, leaving you with your favorite music reproduced with remarkable clarity.
Includes:
In-ear earphones 
Assorted eartips 
Filter tool with 2 replacement filters 
Carrying pouch 
Compatibility
The hf5 is compatible with all iPod䋢 models and music players that accept a 3.5 mm plug.
Frequency response: 20 Hz -15 kHz 
Noise isolation: 35- 42 dB (depending on eartip used) 
Acoustic polarity: + electrical = + acoustic 
Transducer type: Balanced armature 
Sensitivity (1 kHz): 105 dB SPL for a 0.1 VRMS input 
Impedance: 16 Ohms (nominal) 
Maximum output: 120 dB SPL 
Cable: 4 ft 
Weight: less than 0.5 oz