ABS exterior, polyurethane insulation layer, stainless steel inner chamber. Air circulation system that homogenizes the temperature in the working room. Resolution: 0,1 °C. Temperature fluctuation: ± 0,1 °C. Refrigerating function that allows reaching temperatures below ambient on CTSI-070-001 model. Orbital diameter: 20 mm. Large LCD screen that shows temperature, shaking speed and timer (0-9999 min). DC Brushless motor, maintenance free, with progressive start and security system. 220-240 V / 50-60 Hz. Warranty 1 year