Prostereo F4 Dynamic Driver Hi-Res In-Ear Headphones

ProStereo™ F4 9mm Neodymium Magnet Driver and Powerful Bass module which enables Clear and Natural Sound.
ProStereo™ F4 Audiophile Copper wire Minimize audio signal loss with high purity cable, so as to effectively enhance the headphone's bass flexibility and analytical power,
ProStereo™ F4 Built-in Professional-Grade Microphone can be used for high-definition calls and voice recognition.
ProStereo™ F4 Frequency Range (Hz): 5Hz - 70 kHz Certified by the Japan Audio Society for the Hi-Res Audio! Headphone specification an Aluminium shell can effectively isolate external electromagnetic influence, to reduce the side effect of music resonance.
ProStereo™ F4 Equipped with a pair of noise-canceling foam earbuds by Comply™ Foam Tips-a a special cutting-edge feature that not only suppresses outside noises but also improves the device's sound performance.

5Hz－70kHz Ultra-wide audio frequency range output

ProStereo™ F4 not only certified by the Japan Audio Society for the Hi-Res Audio^! Headphone specification, but also includes a 9mm diameter driver type unit that can output an extremely wide range from 5Hz to 70kHz, a detailed tone in the face of high frequencies or bass.

Aluminium Alloy Shell

ProStereo ™ F4 is with a personalized copper brown aluminum shell, the overall style of low-key and neutral brings freshness from the mainstream of black and white. As for the good-looking aluminum alloy shell, it can also be isolated from external electromagnetic effects, thus effectively reduce the role of music resonance. Together with high-fidelity acoustic drivers, playing Hi-Res Audio^! is more obvious.

Not only for entertainment but also for communication

In addition, ProStereo™ F4 has a professional microphone with multi-functional control keys for high-definition calls, volume control, and voice recognition^{^}, and with Hi-Fi high-definition audio quality that can be compatible with the latest models of mobile phones.

Specifications

Driver Type: 9mm Dynamic Driver
Sensitivity (dB/MW):102.5 ± 3 dB/mW
Frequency Range (Hz): 5 Hz – 70 kHz
Max.Input Power: 10mW
Cable length: 1.2 meters
Weight: 18.4 grams
Impedance: 17 Ω

Box Content

ProStereo™ F3 Headphones
Earbuds (SS,S,M,L sizes)
Comply™ Foam Tips
Premium carrying pouch
Quick Start Guide

User Manual

Warranty & Returns

The product with this logo is conformed to the High-Resolution Audio standard defined by the Japan Audio Society. This logo is used under license from the Japan Audio Society.