Jellyfish Volcano Lamp Aquarium LED Lights Night Table 4 Types How to Use: 1. Take out the product, open the water tank cover, add water to the water tank and it up without overflowing. 2. Put red and white volcanic beads on the top of the product and the water tank cover 3. Take out the battery cover and insert 3 AA batteries (not Included) 4. Press the "power switch" ON/OFF button on the back of the product to turn the power on/off 5. Press the "product switch" on the front of the product again, the is on, and the volcanic beads appear repeatedly 6. The product can use a transformer (output DC4.5V, 500mA transformer, transformer is delivered, you need to buy it yourself) Features: 1.The Water Aquarium provides a soothing underwater world of floating 2.LED lights in the aquarium base give off a multi-color, wonderful. 3.Enjoy owning your beautiful aquarium without worry about cleaning and maintenance. 4.Watch as the jellyfish swim just like go to visit aquarium. 5.It is great to be a gift or as a cool night. Specifications: Material: Plastic Size：7x7x23.5cm/2.8x2.8x9.3in Optional Type: 4 patterns for choice Power supply: 3 x AA batteries (not Included) Package Included: 1 x Aquarium LED Kindly Notes: 1. all types have artificial jellyfish, check the details before you buy. 2.Fish are real ones, we should harm any sea animals. 3.Due to the and screen setting difference, the item's real color may has slight difference. 4. allow slight dimension difference due to different manual measurement. 5.Thank you for your kindly understanding.