and high quality No heat or chemicals used Easy to operate, long service life, self-protection perfect for indoor or outdoor fountains, water feature, and office use Add a stunning fog effect to your pond or water tank to filter the bad smell with electro and ultrasonic technology Need to match the power supply DC head is external positive internal negative. HOW TO USE: Submerged in water, the product is 2-3cm from the water . Specifications: Voltage: 24V Current: 0.8-1A Adapter Interface:5.5 x 2.1mm Diameter: about 3.6cm Height: about 25mm Cable length: about 90cm Colour: as shown Material: metal+plastic Package Contents: 1 x Mist maker Only the above package content, other products are not included. Note: Light 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.