The BiOrb Maintenance Reminder Timer has been designed as your personal reminder. You will never forget to feed your fish with this stylish accessory. The automated timer flashes to remind you when you need to feed your fish, carry out a water change and change the filter cartridge. The soft touch design and ergonomic shape makes it an attractive device the keep anywhere in the home reminding you when to feed the fish, change the water and replace the filter cartridge. How does it work? For example if you want to have the Timer flash at 5pm each day to remind you to feed your fish simply press and hold the feed button at 5pm on Day 1, now your biOrb Timer is set to flash again at 5pm each day.