Sedation Resource Piezo Wireless Precordial / Pretracheal Stethoscope. This item is in excellent condition. The stethoscope has only been used a few times, but the box does have some writing on the top (see photos). I purchased it during my training, but ended up taking a different career path and no longer perform sedation myself. Includes Bluetooth wireless earpiece with charger, precordial amplifier, piezo chest piece, and backup earphones. Amplifier requires 2 AAA batteries for operation. Compatible with bluetooth speakers (not included).