Esophagus monitor for acoustic monitoring of heart and respiratory rate. Affordable and safe monitoring Battery or mains operation Complete with 3 esophagus stethoscopes (Ø 4 / 6 / 8 mm) and power supply Dimensions (in cm): W 12.5 x D 15 x H 6 Scope of delivery: Esophagus stethoscope Ø 4 mm (217604) Esophagus stethoscope Ø 6 mm (217606) Esophagus stethoscope Ø 8 mm (217608) Power supply (217105)