Bluetooth is a short-range wireless technology that allows you to connect headphones or portable speakers, a stereo system or a soundbar to your smartphone or laptop. For a certain version to work, both devices must support it. The versions differ in data transfer speed, power consumption, securing data transfer, anti-interference ability and range of connection.
To take advantage of a particular codec it must be supported by both devices
The upper limit of the frequencies reproduced by the device. The human ear hears the standard frequency range: 20 Hz – 20000 Hz.
ANC is used to reduce the external noise while listening
Control by touches
It allows one-touch pairing of compatible devices (both devices must support it).
The operating time of the device on a single charge.
Voice Assistant is a mobile software agent that can perform tasks based on the user voice commands
Technology of increasing the standard USB voltage and current to speed up battery charging
The conduction of sound to the inner ear through the bones of the skull. "Earphones" are placed on the temple leaving the ear open so that you can keep in touch with the outside world.
More sensitive headphones will play louder than headphones with less sensitivity (with the same signal level and resistance)
The material of earpads affects both your comfort and the sound. It can be leather, eco-leather, velour, fabric/microfiber and foam rubber.
Brand: HIFIMAN
Headphone type: wireless
The lowest frequency, Hz: 20
Brand: Sennheiser
The lowest frequency, Hz: 6