This is a new, unused item. It comes with a case. There are no instructions. Thank you. Please refrain from purchasing if you are looking for a perfect item or are overly concerned about minor details, as this item has been handled by another person. Please only purchase if you understand this. Regarding the color of the product images, the color may differ from the actual product depending on my camera's shooting conditions and the environment of your display or browser. We appreciate your understanding and look forward to your purchase. Case diameter: Approximately 40mm Wrist circumference for the belt: Minimum 13.5cm to maximum 19.5cm Band material/type: Silicone Movement: Quartz