This product is a Seiko chronograph watch, model "SND367PC". Key Features: 1/20 second high-speed chronograph, tachymeter, and calendar (date) display. Movement: Equipped with a highly accurate quartz (battery-powered) movement. Materials and Durability: Both the case and band are made of rust-resistant stainless steel, and it has 10 ATM (water resistant for everyday use) water resistance. Accessories: Adjustment parts Leather strap Replacement tool Instruction manual Dedicated case - It hasn't been a year since I bought it. I wore it on my days off from work, so there are no major scratches or stains. There are adjustment parts, so you can adjust the size for wearing! It's still in good condition and usable.