HIFI Sound Metal Earphones with Double Moving Coil and Double Horn, 9.2 mm NdFeB Speaker for Heavy Bass, In-Ear Noise Isolating Design with Smart Wire Control and Built-in Microphone, Factory Direct Sales Earphones in Black or Silver
Metal HIFI Earphones with Double Moving Coil Design for Heavy Bass and Noise Isolation

These factory-direct HIFI earphones offer a focused audio solution built around a metal chassis and specific acoustic components. They are designed to connect via a universal 3.5mm AUX plug to a wide array of personal audio devices, including smartphones, computers, and portable MP3/MP4 players. The core appeal lies in the combination of a metal construction and a detailed speaker specification aimed at delivering a bass-forward sound profile. The inclusion of inline controls and a microphone adds practical functionality for managing calls and media during mobile use.
Features and Construction

The earphones are defined by their physical build and the technical data provided for their audio components. This section details the materials used and the measurable specifications that influence their performance and handling.
Material and Build
The primary housing of these earphones is fabricated from metal CNC zinc alloy. This material choice contributes directly to the product's given weight of 15 grams, suggesting a denser feel compared to plastic alternatives. The construction method implies a precision machining process for the metal components. The earphones utilise a piston-style in-ear design, which forms the basis of their passive noise-isolating capability by creating a seal within the ear canal.
Size and Practical Fit
The key physical specification provided is the overall weight of 15g, which indicates how the earphones will feel when carried or worn. The piston in-ear design suggests a fit that relies on the included eartips to secure the unit and form an acoustic seal. Their compatibility with the standard 3.5mm AUX interface means they are physically suited to connect with the vast majority of personal audio equipment without requiring adapters, supporting their claim of wide device compatibility.
Uses and Placement

These earphones are positioned as a general-purpose audio accessory with features that cater to both media consumption and communication. Their design supports use in various environments, from stationary desk setups to mobile scenarios.
Event or Professional Use
While not specialised professional gear, the technical specifications such as the speaker's frequency response (20-22,000 Hz) and sensitivity (99±3dB) define their capability to reproduce a full range of audio. The noise-isolating in-ear design can be beneficial in moderately noisy environments by attenuating ambient sound passively. The integrated microphone and call-control functionality make them a practical single-device solution for remote communication, video calls, or gaming where a headset is required.
Everyday Home Use
For personal entertainment, these earphones serve as a direct replacement for standard bundled earbuds, with the stated aim of providing enhanced bass and a '3D surround sound effect'. Their compatibility ensures they work with home computers, laptops, tablets, and smartphones for watching videos, listening to music, or casual gaming. The metal build may appeal to users seeking a more substantial-feeling accessory for daily use compared to lightweight plastic models.
Benefits and Buying Value

The value proposition centres on the combination of stated materials, specified components, and integrated features at a factory-direct point of sale. This section outlines the practical advantages supported by the provided information.
Reuse and Low Maintenance
The durable metal construction implies a potential for extended physical longevity under normal use compared to plastic housings that may be more prone to cracking. The standard 3.5mm interface ensures ongoing compatibility with a broad range of current and legacy audio devices, supporting reuse across different systems. With no mention of complex care routines, maintenance is straightforward, involving simple wiping of the metal surfaces and ensuring the audio jack remains clean.
Why Choose This Product
A user might select these earphones for the concrete combination of a metal build, a specific 9.2 mm NdFeB speaker driver aimed at bass response, and the convenience of inline controls. The factory direct sales model is presented as a channel characteristic. This product offers a defined set of technical specs—including impedance, power handling, and frequency response—for buyers who consider such figures, alongside practical features like the microphone for an all-in-one listening and communication tool.
