AquaTunes 3.5 Gallon Fish Aquarium Sleep Sound Machine, Pre-Recorded Natures Sound, MP3 Player and Speaker Included Pre-recorded with calming sounds of Ocean Waves, Bubbling Brook, Rain Forest and Thunderstorms Energy-efficient LED lighting with multiple dazzling color selections you can choose. Perfect for daylight or nightime viewing depending on your mood or time of day or night. Internal Power Filter keeps aquarium water crystal clear and your fish healthy and happy. This powerful, compact filter has a flow rate of 25 gallons per hour that enhances beneficial gas exchange, all-the-time increasing oxygen levels. As the water is filtered through the Tetra Whisper S filter cartridge, fish waste and other impurities are quickly removed. Unlike other power filters on the market where the internal pump is constantly exposed to dirty aquarium water and can potentially become gummed up, this highly-efficient filter draws dirty aquarium water through the filter cartridge first, cleansing and purifying while keeping the internal pump clean and in pristine working order as the Whisper filter cartridge dense poly-fiber material traps detritus while the premium activated carbon adsorbs discolorations and odors. One-piece construction provides superior strength and durability. Unlike glass tanks glued together with silicone, this break-resistant plastic tank puts to rest any worries or concerns about possible leaks.Offering a unique, trendy shape only plastic can provide with crystal-clear clarity so good most think its made of glass. Ideal for families with children. We are constantly updating our products for a better consumer experience. The aquarium you receive may have a different part than what is pictured here and we apologize for any inconvenience this may have caused. Please contact us at customercare@kollerproducts.com with any questions or concerns relating to a model change, update, or customer service needs. We appreciate your business and well take good care of you.