Model Number: XR-M029-015 Brand Name: Xuerui Key Specifications/Special Features: Feature:Dual Head Stethoscope, Deluxe TypeWith silver dual head chestpiece for adult, the membrane is sensitie for sound collecting.The small bell-like chestpiece is used for auscultation of slight and low frequency sound.With considerate dual anti-chill ring design.The connecting spring is embedded , ear tip is specially designed for suiting the ear structure.With aluminum alloy chestpiece , it's goodfor sound conduction.Blister packaging or gift box packaging is available.FDA is approved.In addition to this model, we have other different models with different functions.Packing Details：1pc/box, 50pcs/ctn,Ctn-size:54 x41 x 28cm, G.W./N.W.: 12/11kgs