Underwater Diver|Sinn Dive Watch 40mm|Sapphire Crystal Dial Window:Experience superior clarity with a sapphire crystal dial window, resistant to scratches and ideal for underwater use. 20Bar Water Resistance:Dive with confidence up to 20Bar, ensuring your watch withstands the depths of the ocean. Automatic Self-Wind Movement:Stay powered with an automatic self-wind movement, https://s.click.aliexpress.com/e/_DmDJRIL