Movement:Quartz movementCase:High quality metal caseDial diameter: 40.0mmDial thickness: 10.0mmStrap length: 220.0mmTable Bandwidth: 220.0mmWater resistance: 30.0m Please don't wear this watch to take a bath and swimming . please note :this small dials are not working1. Any waterproof watch should not be exposed to hot water or water vapor (such as hot water bath, sauna, etc.);2. Try to avoid using it in an environment with a large temperature change. The temperature difference will cause the moisture in the air in the watch to condense, causing water ingress and water mist in the watch.