Four feeding modes: manual one click release and automatic options every 8 hours, 12 hours, or 24 hours. Manual mode dispenses food with a press; automatic modes feed on a schedule to support regular meals and reduce overfeeding during busy days or travel. Large capacity: 400 ml reservoir. Use the adjustable switch to control the amount per dispense, meeting the needs of different fish sizes and tank conditions; minimizes frequent refills. Durable construction: ABS material for reuse and durability. Size 15 x 8.5 x 8.5 cm, compact and easy to move between tanks. Two installation methods: 1) mount directly on the feeding port of a lid covered tank; 2) fix with the included bracket to the aquarium wall for lidless tanks. Position can be adjusted for accurate delivery. Practical applications: Daily routine feeding for busy owners who want reliable schedules. Short absences or weekend trips with planned feeds. Suitable for classroom or breeding setups requiring consistent, timed feeding.