Easy installation and control: The water temperature of the inflatable hot tub can be heated up to 40 °C, with a rapid heating system and the easy-to-use digital control panel. Spa cover with air bladder can successfully minimise the time and frequency taken to reheat outdoor hot tubs, it can be quick and simple to inflate. 4-6 persons round inflatable hot tub: RELXTIME inflatable spa with 130 soothing high-powered bubble jets and a built-in integrated water filtration system to keep the water inside clean. Freeze protection function: Freeze protection automatic heating function prevents inner components from freezing during colder temperatures, you can use your inflatable pool in colder temperatures during the fall or winter seasons! A cover with secure locking buckles keeps the water warm and prevents dust and debris from collecting on the water, with lift handles, the spa can be moved around with ease (when empty). Durable beam construction: Durable laminated PVC material portable tub with vertical 'I-beam' construction which makes the walls rigid and makes them resistant to scrapes and punctures, ensuring your hot spa never loses its shape and stability. All RELXTIME air jet spa is CE/GS/ETL/EMC/UKCA/REACH listed. Multiple compatible accessories: 1 pool cover, 2 filter cartridges & 2 covers, 20 strips water testing, 2 PVC patches, 1 spanner, 1 inflation hose, 1 air valve cap, 1x way valve, 1 drainage bung, 2 child safety key, 1 power cable, 1 storage bag, 1 instruction manual.