Our Expresso Chronograph combines Ebony Wood with Maple Wood Ebony Wood is a rare and valuable wood which comes from a tree that can take over one hundred years to mature. Prized for its intense dark color, it is the darkest natural wood available. It has a tight grain and can be polished to marble-like smoothness. It is so dense it actually sinks in water. Its rarity and color make for a prized possession intended to last a lifetime. Features: - Black and Silver Dial. - Scratch-free and Ultra-Durable Mineral Glass. - Interlinked Ebony and Maple Wooden Band. - Stop watch and date functionality. Product Dimensions: Band Width: 48 mm Case Thickness: 13 mm Watch Strap Width: 24 mm Watch Weight: 71 grams Battery: SONY SR626SW Movement is Quartz with chronograph and date functionality. This watch is not water resistant. It is just slash-proof Recommend taking your watch to a professional watch store when changing batteries or adjusting links.