Same summary

Defender FreeMotion B571 2.0 USB BT gray headphones with microphone are designed for users who need flexible headphones for everyday use - both for working on a computer, for making phone calls or listening to music in their free time. Thanks to Bluetooth and USB connectivity, they allow for quick switching between devices, which is practical for working from home or on the go. The model is suitable primarily for users who value ease of use and functionality in an everyday digital environment, but due to their construction, they are not primary for professional music production or demanding gaming use, where extremely low latency or advanced audio features are required.

Recommendation source: Enaa guides and team experience.

User view

The FreeMotion B571 headphones are usually chosen by those who want a practical solution for work, video calls and listening to music from one or more devices. In practice, they are very useful for home offices or studies, as they allow quick connection to various devices, and the microphone is useful for clear calls without interference from the environment. For users who are still gathering more information about which type of headphones is suitable for their needs, our headphone selection guide can also be helpful, where different usage scenarios are clearly described.

Many choose Defender models because of their simplicity, reliability, and wide adaptability for everyday use in various environments.

Why buy at Enaa

At Enaa you will find an expanded range of quality headphones from different manufacturers, and you can easily compare technical features and check what best suits your usage style. Our experience and expert product reviews help you make an easier decision based on your needs and expectations.

Answers to frequently asked questions

Can I use the Defender FreeMotion B571 headphones with both a computer and a smartphone?

Yes, the model allows connection via USB or Bluetooth, so you can easily switch between your computer and phone depending on your current needs.

How comfortable are the headphones for long-term use?

When worn daily for several hours, the construction is designed to provide comfort, but the feel may depend on the individual and head size.

Is the microphone suitable for video calls and online lectures?

The built-in microphone is designed for everyday calls and online meetings, which is sufficient for most users for work, school, or personal conversations.

Are the headphones suitable for sports or active exercise?

This model is more suited to stationary use, such as working on a computer or watching TV, so for sports and intense activities, we recommend looking for headphones with greater stability when wearing.

Where can I find more advice on choosing the right headphones?

Additional helpful information on choosing headphones for different occasions can be found in our headphone buying guide .

Description updated: April 2026