This is an Elite 7E-A/B/D Portable Phlegm Suction Machine, a medical device designed to clear mucus or fluids effectively. Technology: Experience quiet operation with an efficient, oil-free negative pressure pump (noise level below 65dB). Specifications: Features a maximum negative pressure of ≥ 0.075 MPa and a suction rate of ≥ 18 L/min. Features: Includes a 1000 mL liquid holder, an anti-overflow device, and a compact, portable design perfect for emergency use. Price: In Bangladesh, prices typically range from ৳ 7,650 to ৳ 9,200 depending on the seller. Disclaimer: Medical devices should only be operated by trained individuals. Consult a healthcare professional for proper usage.