The TT Ebony Black Wood Watch is equipped with high-quality Japanese quartz movement time piece and a stainless steel button and clasp. Diameter of the dial is 45 mm. The strap is made of 100% genuine leather and case is made of all wood. No Dyes or chemicals are added to make these watches and are 100% environmentally friendly. It does more than just benefit the environment to buy a TimeTree watch. Planting trees using the hands of time, that’s the TimeTree difference!