Features: 100% brand new and high quality Adjustable pick-up loudness control. Headset combined with ear padding to cut out background noises. nterchangeable - 2 Probe heads (60mm and 290mm lengths). Strong probe body, black ABS molding. 9 Volt battery for about 30 hour's continuous operation. Package Includes: 1 x Electronic Stethoscope 1 x Earphone 1 x Short Probe 1 x Long Probe 1 x Bag 1 x Manual Specifications: Material: ABS Size: Approx.26x26cm/10.24x10.24in note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Does not include battery