This gemstone watch is made with Fossil Turritella Agate beads, Onyx accent beads, & pewter metal spacers. The Turritella Agate beads are flat ovals, 0.9 - 1 inch in length, 0.55 - 0.6 inches in width, & 0.2 inches thick. Turritella Agate is composed of Turritella snails. All the small circles you see in the beads are cross-sections through the fossil snails. The watch face is about 1 inch across. It is silver, with a stainless steel back. The face is water resistant & battery operated. It takes a common battery - any jeweler can replace it when needed. The beads are strung on a very durable stretchy band, which lasts an average of 5-6 years before it needs to be restrung for a nominal fee. If it breaks within the first couple years, there is no charge to restring it. Measure your wrist with a flexible measuring tape or piece of non-stretchy string to determine your wrist size. Measure twice & make sure you start at 0 on the measuring tape. :) We can change the watch face for an additional fee of $4. Please message us for details. We can customize the watch to fit. The options in the variations menu are based on taking out or adding repetitions of the bead pattern. We can achieve different sizes by adding extra spacers or different size spacers. You can provide your wrist size in the personalization option & we will do our best to get the size as close to that as possible. Fossil Turritella Agate & Onyx Gemstone Stretchy Watch Bracelet, Very Durable Stretchy Band, Multiple Sizes Available