Immerse the pump into a water reservoir but ascertain that the water level is sufficient – Fix the shower as you like using an s–hook or a sucker – Insert a plug into mains DC 12V – Turn on the shower by pressing a button – Adjust water pressure using a regulator Min-Max – Take a shower and enjoy Power supply: DC 12V Weight: approx. 1 kg Adjustable water flow. Max. flow rate: 6L/Min Please kindly noted: yellow shower set packed with color box(printed with instruction information ) and grey bag, blue shower set only packed with grey bag,no color box.