Bai 10.5in Aquamaster Weatherproof Wall Clock with Built-in Thermometer. Bai 11in Helios Aluminum Wall Clock with Built-in Thermometer is one the most versatile clock because it can literally go anywhere: Indoors or outdoors, bathroom or kitchen, deck or boat. And its built-in thermometer only adds to the list! Features custom-designed double rubber gasket front-n-back to completely block out the elements. Quality Germen Junghans silent quartz movement, glass lens and metal hands. Requires one AA battery to operate. Gift boxed.