Westone W20 v2 Earphones with Bluetooth The dual balanced-armature driver design of the W20 uses separate low-frequency and high-frequency drivers to deliver enhanced sonic detail and extended frequency response. The fat sound signature of the W20 is ideal for those music lovers who don’t want their listening experience coloured by excessive low-frequency information. Ideal for all personal audio and video devices. TRUE-FIT® TECHNOLOGY 60 years of experience designing products for the ear, has resulted in a universal-fit earpiece that is compact, low-profile, lightweight, and extremely comfortable. Our proprietary eartips enhance the performance of the W20 by ensuring a great fit and seal, right out of the box. BALANCED-ARMATURE DRIVERS Westone’s proprietary balanced-armature drivers provide enhanced sonic detail and frequency range that extends well beyond other in-ear solutions. WESTONE BLUETOOTH CABLE Full-resolution Bluetooth Cable uses aptX® technology to deliver extraordinary detail, clarity, and a dynamic soundstage that has to be heard to be appreciated. The Westone Bluetooth Cable features; 8 hours of battery life, a 10 meter/ 32 foot range, has a water and dust resistant IPX-4 rating, and features our exclusive MMCX Audio® connectors, which allows the Bluetooth Cable to be used with any custom-fit or universal-fit earpiece. 3-BUTTON MFI CONTROL SYSTEM + MICROPHONE 55” MFi Cable with MMCX Audio connector features a Microphone controller that is compatible with iPhones®, iPods®, and iPads® and features volume +/-, tracking +/-, phone answer, and Siri activation. TECHNICAL SPECS The Westone W20 features a full-range, dual balanced-armature driver with 117 dB SPL @ 1mW sensitivity, 20Hz - 18kHz frequency response, and an impedance of 33 ohms @ 1kHz and 25dB passive noise attenuation. IN THE BOX Features Full-range, dual balanced-armature driver with 3-way passive crossover 3-Button Cable with Microphone Westone Bluetooth Cable Exchangeable Faceplates Patented STAR™ Silicone Tipp True-Fit™ Foam Tips