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  • Quadruple Balanced Armature drivers
  • Three-way crossover
  • Breathtaking clarity and realism
  • Westone True-Fit Technology
  • EPIC replaceable cable
  • 3-Button Apple control system + mic


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Product Details

Technical Features

Engineered to take listening experience to another level, the W40 uses four balanced armature drivers(2 low, 1 mid, 1 high) for a unique, round, warm sound and sharp articulations. These 4 drivers in a three-way crossover network deliver breathtaking clarity and realism. Recommended for personal audio and video devices. Westone's robust replaceable cable is constructed of bifurcated, high-flex, ultra-low resistance tensile wire, reinforced with a special aramid fiber, and braided for ultimate durability, acoustic transparency, and isolation from mechanical cable noise.


The W40 is a low-profile, lightweight, universal earpiece which delivers maximum comfort and in-ear coupling for dynamic transfer of sound. Featuring an Up and Over™ cabling route, the wearing style helps prevent microphonics and keeps the earpiece securely in place.

Other Functions

The W40 comes with a second cable that integrates a 3-button remote/mic that can control Apple devices for calls, volume and music playback.

Driver 4 balanced armature drivers with a 3-way crossover 
Frequency Range  10Hz - 18kHz
Impedance 31ohms @ 1kHz
Sensitivity 118dB SPL @ 1mW
Passive Noise Attenuation           ~ 25dB
Cable EPIC replaceable cable
MFi G2 cable
Weight 12.7g
Accessories Exchangeable black, blue and red colour faceplates
5 sizes of patented STAR™ silicone ear tips
5 sizes of premium True-Fit™ comfort foam ear tips
MFi three-button cable
Westone 3.5mm braided replacement cable
Mini-monitor vault
Cleaning tool 

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