Place of Origin: China Brand Name: OEM Model Number: VP-S001 Power Source: Machinery Warranty: 1 Year After-sale Service: Online technical support Material: metal, Plastic Shelf Life: 3 years Quality Certification: ce Instrument classification: Class II Safety standard: EN 149 -2001+A1-2009 Product name: Aluminium single head stethoscope Product material: PVC/aluminium alloy product range: Used for heart sound and pulse auscultation Tube length: 60cm Membrame diameter: 47mm/38mm Product weight: 86g Package size: 20x10x2.5cm