Polk Audio UltraFit 500 vs Koss RUK20

 
Polk Audio UltraFit 500
In Stock 
$39.99
  • The Polk Audio UltraFit 500 offers:
    • in-ear headphones designed for sports and active use
    • moisture-resistant construction for added durability
    • bendable SecureFit™ Supports help headphones stay in place
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Koss RUK20
DISCONTINUED 
 
$19.99
  • includes three pairs of silicon ear tips for optimum comfort and noise isolation
  • 4-foot miniplug cable
  • frequency response: 16-20,000 Hz
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Product Features

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Condition New StockNew Stock
General Polk Audio UltraFit 500Koss RUK20
Fit Style
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In-earIn-ear
Earcup Type
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ClosedClosed
Noise-canceling
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NoNo
Bluetooth
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NoNo
Frequency Response
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18-23k Hz16-20k Hz
Sensitivity
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118 dB110 dB
Impedance
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16 Ohms16 Ohms
Weight
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0.5 ouncesNot Given
Cord Length
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14", 41"48"
Airline Adapter Included
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NoNo
iPod Control
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NoNo
Volume Control
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NoNo
Built-in Microphone
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NoNo
Parts Warranty
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1 YearLifetime
Labor Warranty
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1 YearLifetime
  Owner's ManualOwner's Manual
 Hands-on ResearchHands-on Research
 
Polk Audio UltraFit 500
In Stock 
$39.99
Add to Cart
Koss RUK20
DISCONTINUED 
$19.99
Add to Cart