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New Balance NB639B Fitness Evolved Sport Earbuds (Black)

2-in-1 Sport Earbuds with Removable Ear Hooks, Pedometer & Heart Rate Monitor (Black)

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This item has been discontinued

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General Features:

  • Lightweight 2-in-1 Sport Earbuds
  • Includes removable earhooks
  • Built-in 3D pedometer
  • One-touch heart rate monitor
  • Heart Rate Monitor/Pedometer Charges & Syncs via USB
  • Chronograph Workout Timer
  • Set custom training profiles
  • Announces heart rate, caloric burn, steps taken and distance stats without pausing your music or your workout
  • Includes multiple sized eartips for comfortable fit
  • Comes with Heartpal software to graph exercise data
  • 1-year Manufacturer's Warranty

Headphone Design

Acoustic Principle
The basic design of the headphones. There are 3 different types: Open: Have ports that allow air through the back of the diaphragms, enabling the headphones to sound like the music is coming from an outside source. Closed: Completely sealed and have no air passing through the diaphragms. Sounds like you are in a closed off room. Semi-open: Have slots or ports in the back of the cup and are partially open. This allows for a mixed sound between an open and closed headphone.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

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Product Summary

Manufacturer

Model Number

NB639B

UPC

0047532896435

Weight

0.20lbs

Internal SKU

nb639b

Internal Product ID

65396

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: New Balance NB639B Fitness Evolved Sport Earbuds (Black)