The inner drum is crystal (made of stainless zircon) (longer shelf life).Internal drum without welds (thermal welding) (longer life span).European thermostat (French – Italian) high sensitivity (longer lifespan).High-density foam insulation to save the most energy (saving electricity consumption).Most of the components of the heater are French (longer lifespan).Distinctive and unique aesthetic form.All Atlantic heaters have French and European quality certificates.About the Atlantic Brandlife span 4 years.