1.Microprocessor controlled electronic system-management module. 2. Forced air cooling. 3. Hot gas defrost with evaporator temperature control. 4. Exterior covering white plastic-coated galvanized steel. 5. Hermetic reciprocating compressor. 6. Frame in galvanised steel. 7. Digital display temperature. 8. Stainless steel drain tray. 9. Aluminum brass thread used heat exchanger,the higher efficiency. 10.Control and refrigeration system as one unit, easy to install. 11.There isn't joints in refrigeration system,no adding refrigerant. Warranty: One year all parts,6 years on compressor.