Digital watch. The watchcase is plastic. The back cover is stainless steel. The strap is silicon rubber. The size of the watch: the watchcase has a diameter of 46mm and thickness of 15mm. The watch is waterproof till 100 Mtr (10 ATM) The watch has a quartz (battery) LCD movement made in Japan. (By the Seiko company) The watch is new. You will recieve 2 years guarantee on it.