Features: OOTDTY Just put this floating mechanical device in the pond or fish tanks, and plugs within the usb adapter, turn on thepower. Then right here comes this floating No any chemicals, heat, Just passable water, then it'll carry you effect. Colorless, non-toxic andodorless. The intensity of water must be beyond8cm. Therefore, it'll work effectively and properly. When is equiped with a LED powergenerator, the light will with the arriving out adding cozyand romantics on your fish tanks, rockery landscape, (power adapter no longer included). Suitable for mini pool, pond, fish tanks, rockery landscape, reptiles incubator and extra occasion, Specifications: Material:Plastic Floating Rings Diameter: Approx/3 Overall Height: Approx/5 Combination Size: Approx/3 Color:White/Black Applicable area: less than 10 square meter Water tanks capacity: more than 10 liters Number of fog outlets: 1 Noise: below36dB RatedVoltage: 220V Package Includes: 1x Maker Note: ① enable 1-2cm errors because of instruction manual measurement, just ensure you don't mind earlier than you order. ② to the adaptation between various monitors, the picture may not reflect the actual coloration of the item. Thanks on your understandings.