I'm impressed with the build quality of the Watch F21. The watch feels sturdy and well-made. The screen is also scratch-resistant which is a great feature.

The Watch F21 is a great value for its price. It has all the basic features you need in a smartwatch, plus some advanced features like sleep tracking and music playback. Highly recommended.

The Watch F21 is perfect for those who want a watch with good call quality. The watch has a clear sound quality and the microphone picks up sound well. I use it for work and it has not let me down.