Simple Modern Classic Indoor/Outdoor Minimalist Round 12-inch Quiet Wall Clock - Thin Black Numerals&Dials Simple, stylish modern design with contrasting black numerals on white background for clear time viewing Quiet, low-pitch tick and smooth sweeping movement of clock hands; providing a peaceful environment when at work or in your leisure time. Measured 12" in diameter, a great decorative piece as well as a fully functional wall watch. Requires 1 AA battery (not included); recommend using CARBON-ZINC battery, not ALKALINE battery