INFLATABLE SPA TUB: Connect the external pump and press bubble button to quickly inflate the pool. The pump can be disassembled, easy to fold and store the hot tub inflatable HEAT FUNCTION: Features a handheld LCD display for easy operation. The heating rate is 1-2C per hour, and the maximum temperature can reach 42. Please note that the hot tubs should not be setup or left out when the outdoor temperature is lower than 4C SURROUNDING JETS: Plenty of water outlets to surround everyone with soothing and gentle massaging bubbles - keeping you relaxed and happy as you enjoy your garden/outdoor space.FILTER CARTRIDGE INCLUDED: When the water is heated, the filter cartridge will filter out the impurities in the water to protect the machine from damage. The service life of the filter element is about 150 hours(reminder on wireless controller), it should be replaced in timePRODUCT DETAILS: Overall Dimensions: 180 x 68H cm, Water Capacity: 950L. NOTE: Keep the filling water temperature at around 25-26C. If the temperature is higher than 42C, the pool can not work normally, and the high-temperature water will bring a burning sensation to your skin