Robust and weatherproof outdoor wall clock Supplied with simple 2-step teaching system that enables children to tell the time in 12 and 24-Hour format as soon as they can read numbers up to 60. Provides effortless reinforcement of classroom learning take the same 2-step time teaching method from the classroom to the playground. This 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 2-step teaching system is easy to learn and remember. Step 1: Read the number at the end of the short hand. Step 2: Read the number at the end of the long hand. Like this: 1:52. It's that easy! Size: 360 x 360 x 60mm.