Ideal for living room, bedroom, study room, kids room, school, meeting room and any other places which need a silent environment. Big 12 inch/30cm basic dial quartz wall clock with black bold Arabic numeral analogue display and wooden background make it easy to read from any corner of your bedroom, kitchen, den, living room, bathroom or office. Sturdy wood colour frame and Flat glass lens, makes it easy to clean and keeps dust away from dial. This glow in the dark wall clock required 1 "AA" battery for clock movement and 4 “AA” batteries for energy saving light sensor. The light sensor and the clock movement operate independently, easy to use. (Batteries not included). Back nail slot make the installation is easily, easy to hang and install. Hang it in your living room, bedroom, bathroom, kitchen, office, balcony, garage wherever you like. The great present for family friends neighbours kids and house warming wedding. Our illuminated wall clock is equipped with a high quality smart light sensor, and features a night light function that illuminates in the dark, making it great for the elderly, kids, or visually impaired people. 3 modes, Choose the "AUTO" mode to detect the dark environment and glow in the dark by sound, can lasting 45 seconds. Or choose "ON"/"OFF" modes to keep the light on/off in darkness. (If the light not on after installing the battery, please follow the steps below to test: a. Switch is turned to "ON" or "AUTO" b. Use the new batteries, and the "+" and "-" terminals aligned properly. c. In a dark environment ("AUTO" mode also need make a sound to activate)) Note: As this clock is designed without a second hand, we kindly ask you to allow 5-8 minutes after battery installation to observe if the movement mechanism activates properly.