Description: Handcrafted Since 1971 Free Parts for Life Lifetime Warranty - including tubing! BlackOut comes with black binaural and chestpiece Stainless steel dual-head chestpiece High frequency transmission of heart and lung sounds at 100 to 1000Hz Low frequency sound transmission at 20-100 Hz Double tube acoustic transmission eliminates internal acoustic leakage and external interference Latex-free Accessories: 2 - Additional ComfortSeala®? Eartips 1 - Diaphragm 1 - ID tag

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