... electricity saving, high reliability and long lifespan 1, noiseless oil free air pump .Model: SL400Rated voltage: 110/220V ... for any environment.3, It needn't add oil when using , the air exhausting from tank do ... No higher than 60DB.Green environmental protection: No oil lubrication, air supply is cleaning and drying.Warranty ... 86-576-82442976 CP: Tracy 480W mute oil free air pump compressor part