Versatile feeder which can be mounted on the aquarium hood, on a condensation tray, or on the glass edge using the brackets provided. Reliable and accurate quartz timer. Over 1 year's continuous use from the battery. Battery condition indicator. Serves up to 14 individual meals. Food served over several hours, reducing the danger of overfeeding. Accurate feeding of all fish foods, including flakes. Easy to use timer provides up to 4 meals per day. Requires 1 x AA battery (not included).