Which batteries does One use?

The One contains a Lithium Ion rechargeable battery. If you are having problems with your stethoscope retaining charge, please send it back to us. Do not try to replace the battery on your own.

To return your stethoscope:

1. Fill in the Repair and Return Form.

2. Insert the printed form in the box to be returned.

3. Send in your stethoscope.