It closes with a special buckle, allowing you to change the strap while keeping your watch safe. Main Functions: 1. The belt is made of high-quality stainless steel material and produced according to a special process; 2. Comes with a quick release pin, easy to change or install the strap without tools; 3. Magnet clasp design, adjustable strap length without hasp, easy to stick and lock your strap; 4. Lightweight and breathable stainless steel, comfortable for everyday wear; 5. The classic and stylish design is suitable for every occasion and style; 6. Compatible with any smartwatch using 45/44/42mm spring bars;