1. silent, no noise, no vibration; 2. energy-saving; 3. environment-protection; 4. economy. ... . Semi-conductor refrigeration, pollution free, health and fashion; 2. No noise, no vibration design; 3. Reversible door design; 4. Automatically evaporating ... ; 9. Insulation: Cyclopentane; 10. Refrigeration: R600a. CB-20SA wine cooler electronic, silent mini bar, electric beverage cooler