Tachymeter chronograph Equipped with Japanese movement Sapphire glass Natural black shell dial DM2057-11SR Water resistant to 10 ATM Case and bracelet are all stainless and gentle on the skin Watch body weight approx. 152 grams Natural diamonds (Note) ☆ Product images are Although we take great care to faithfully reproduce the real thing, the actual color may differ depending on your monitor environment. Thank you for your understanding. The dial of this model uses a natural shell, so you can see its unique expression. In addition, the size of this watch is written in the product description or product details column, etc., so please take a look and refer to it before purchasing. ★This product is for monitor use. This is built into the watch you purchased, and is installed at the time of shipment from the factory to check the watch's functions and performance. Since the product will wear out before the customer purchases it, the lifespan of monitor products may be shorter than that stated in the instruction manual. In addition, replacement will be charged even within the warranty period. ★