Step 1: Place the binaural earpiece in the ear and hold the earpiece to reach the desired position to perform auscultation
Step 2: Choose your earpiece according to different needs
Step 3: Tap the diaphragm gently with your hand, you can hear the sound, so you can confirm that the stethoscope is in a standby state.
Step 4: If you can't hear the sound, you can turn the ear head 180 degrees, you can hear a click sound to indicate that it is in place, and tap the diaphragm with your hand toward the opposite side. A vibrating sound is heard at this time, indicating that the device is set for use
Step 5: If you feel too tight or clip the ears, please select the appropriate earplugs and adjust the earrings (pull outwards to adjust the spring sheet)