Craft a sophisticated look with an all black watch with a stainless steel casing. Designed to be durable while maintaining a slim profile this watch will be your new go-to. We have also included a sophisticated date and weekday windows in a way that is unique to Arvo. Your wrist will stand out each and every day so be prepared to be questioned by all! Note for travelers and night owls - The mechanism that controls the switching of the "Day" window happens over a 3 hour period beginning at midnight and completing the transition at 3:00am. If your watch is not doing so set the time ahead 12 hours and your watch will be correct again. Strap/Band Width: 18mm. Case Size: 36mm 7mm Thin. Water Resistance: 3 ATM. Battery: SR621SW. Interchangeable Black Genuine Leather: the quick release function of Arvo Watch Bands makes them easy to switch out in a minute or two without tools.