Features: 1. High negative pressure, large flux, low noise. It is a brand new mechanism design with suction bottle hidden inside and square negative pressure meter crust completely mad of plastic. This design not only reduces the working noise but also makes it more fashionable and precise. 2. It adopts advanced overflow-protection design, which can prevent pus and mucus from leaking into the machine. 3. Portable, lightweight, and easy to carry especially suitable for emergency and outside use. Product parameters: Power:AC220V/110V 60Hz The input power:90VA The limit negative pressure:≥ 0.06MPa Negative pressure adjustment range:0.02MPa to the limit negative pressure Pumping rate:≥ 15L / min Fuse tube:F1.5AL250V,φ5 × 20 Storage bottle:1000mL Noise:≤ 65dB (A) Net Weight:3.8kg Dimensions:370 × 180 × 285 (mm) Attachments: 2 pcs Suction catheter(Adults and children) 1 pc Phlegm Suction conductor 1 pc Storage bottle (1000mL) 2 pcs Fuse tubes 2 pcs Air filters 1 pc User manual