Sennheiser HD 25 Headphones

Indicates whether a product includes a standard 3.5 mm audio connector, the common analog jack used for headphones, microphones and other audio devices.

Indicates the configuration of an acoustic system, such as closed, open, semi‑open or semi‑closed. The value describes how sound is managed within the device and helps users understand its acoustic characteristics.

The linear distance that a cable covers, expressed with a length unit such as meters, centimeters or inches. It represents the total usable length of the cable for connecting devices.

The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.

The network and data interface technologies supported by the product, such as Wired, Wireless, USB, Bluetooth, or combinations thereof. Each value represents a distinct technology that can be used for communication or power delivery.

The classification of the audio driver used in a product, such as Dynamic, Neodymium, Hybrid, or Balanced. It indicates the technology that shapes sound reproduction and can influence tonal quality, sensitivity, and power handling.

The type of ear attachment used by a headset or earphones, indicating how the device fits around or inside the ear. Common values include "Intraaural", "Circumaural", "Supraaural" and "On‑ear". This attribute helps users choose a model that matches their preferred fit and comfort.

The span of audio frequencies that a product can accurately reproduce or respond to, expressed in hertz (Hz). It indicates the lowest and highest frequencies the device can handle, helping users assess suitability for music playback, communication, or signal processing applications.

The sensitivity of a headphone expressed in decibels (dB), indicating how much sound pressure the headphones can produce or detect for a given electrical input level. Values may be positive, negative, or zero and are typically measured at 1 kHz. This attribute helps users compare the loudness performance of different headphones.

The impedance value indicates the resistance that a component or circuit offers to alternating current, expressed in ohms (Ω). It is used to characterize speakers, microphones, audio cables and other electronic equipment to ensure optimal compatibility with the source signal.

The highest electrical power that a device can safely accept from its input source, expressed in watts (W). It indicates the maximum power rating of the device’s input circuitry and helps users ensure that the product is connected to a supply within its limits.

The overall distortion introduced by a device, expressed as a percentage of the total output signal. It represents the ratio of all harmonic components to the fundamental frequency and indicates how much the waveform deviates from a perfect sine wave.

A textual description of the way a product is worn or fitted on the body, such as "headband", "earhook", "neck‑band", "over‑the‑ear", or "in‑ear". This attribute helps users understand how the item will be positioned and secured during use.