With 6 comfortable places, the O681 model is ideal to accommodate a large group of persons. Its three 4HP pumps and its blower generate terrific power that will leave no one unsatisfied. Its 81 jets and its distribution valve that can concentrate the power on a specific station will procure you tonic and deep massages. The O681 factory comes with the Vulcano jet to massage specific area such as the lumbar, hips or arms. However, this would be useless without its high-performance thermal insulation that makes it a great Canadian spa!