Montblanc leather products always carry high-quality leather, as well as elegance, luxury and suitability to become excellent accessories. With Montblanc belt design, the two versions you are seeing are both extremely attractive and masculine belt models.
The buckle is crafted by Montblanc from luxurious platinum-plated stainless steel. The buckle shape also has a traditional look, but Montblanc also tweaked it a bit to make the belt more perfect.
For the leather strap, Montblanc has used a special color technique, making the leather have an extremely smooth color transition effect but not too much. With the belt version 123900, the main color is gray and gradually changes to black on the edge, while for version 123901, the gray is replaced by dark blue.
Details:
Dark gray: https://butchinhhang.com/san-pham/that-lung-montblanc-mens-reversible-business-leather-belt-123900/
Blue black: https://butchinhhang.com/san-pham/that-lung-montblanc-mens-reversible-cut-to-size-business-belt-123899/