This is the small model essence. The size is 32mm diameter (without the crown) and thickness 8mm. The watchcase is made out of bio degradable plastic. The strap is made from natural rubber. The watch has a mineral glass. The watch has a Swiss quartz (battery) movement. To complete the green theme on this watch the packaging is made from recycled PET bottles. This watch is new. You will recieve 2 years guarantee on it.