Robust and weatherproof outdoor wall clock. Supplied with simple 3-step teaching system. It allows effortless reinforcement of classroom learning take the same 3-step time teaching method from the classroom to the playground. This durable clock has a toughened glass lens powder-coated steel frame and takes a single AA battery (not included). It is sun and weather-resistant. Ideal for school playgrounds outdoor activity centres gardens and sports facilities. This product is not suitable for children under 4 years of age. The 3-step teaching system is easy to learn and remember. Step 1: Read the number at the end of the long hand. Step 2: Say which side it’s pointing to: ""minutes to"" or ""minutes past"" Step 3: Read the number at the end of the short hand. Like this: 8 minutes to 2. It's that easy! Size: 360 x 360 x 60mm.