[Self Regulation]: Automatic Fish Feeder are designed with 8h,12h, 24h, 48h, 72h for feeding internal and 1 or 2 or 3,4,5 for required number of feeding cycles. [Large Capacity]: 450ml capacity, sealed design of box cover and the slot for desiccant, featuring waterproof. [Easy Install]: The Aquarium Fish Feeder is simple install and using, portable and practical. [Suitable For]: The fish feeder is with translucent food container is universal for forage under the size of 6mm. [Wide Applications]: This Vacation Fish Feeder is widely suitable for conventional fish tank, Indoor and outdoor tank, fish tank, etc. Power Supply:2 x AA batteries(Not included batteries) Colour:Black Material:ABS Package Contents: 1 * Feeder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.