1.Brushless,Long life,High efficiency 2.USB pump,brushless USB pump,DC brushless USB pump 3.quiet,more than 20,000 hour's ... life USB pump,brushless USB pump,DC brushless USB pumpFeature: 1. Life: Expected life span is ... .6W-4W 6. Efficiency: 98% 7. Operation temperature: Within 100degC8.with 3 super bright white LED lightCaution: Do not operate for ...