1. Two feeding options - Schedule the Automatic Fish Feeder to feed once or twice a day in 12-hour or 24-hour intervals. The manual feed option lets you dispense food on demand without disrupting the automatic schedule. 2. Premium quality material - Built from durable plastic for long-lasting use in diverse aquarium conditions. Reliable performance that integrates with your aquascape while supporting fish health and minimizing maintenance. 3. Versatile installation methods - Two installation options: fixed clamp/holder for open-top tanks and fastening strap for closed tanks with lids. Secure attachment across a variety of aquarium setups. 4. Larger capacity and diverse compatibility - Two feeding containers: large 210 ml holds up to 100 g of food, small 100 ml holds up to 50 g. Compatible with flakes, pellets, and granules to accommodate different fish diets.