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Taal Digital Stethoscope is a plug and play device. You simply charge our device using the USB-C cable provided for 4 hours before use. This will give you a battery life of 12 hours. The earphones provided are recommended and should not be switched with another pair or model. To transfer sounds, using the USB-C output to either your mobile phone or laptop.
There are likely 3 reasons for this:
1) Earphones are not fully plugged in:
In this case, please try reinserting the earphone jack until you hear a small click sound.
2) Device is not charged:
Make sure you charge for 1-4 hours before use.
3) Device is faulty:
Send in a support request and we will get back to you at the earliest to replace your device.
Sound is of primary importance in a Stethoscope. We have observed that bluetooth reduces quality of sounds and makes it more tinny in nature. Moreover, in case of multiple bluetooth devices in the same vicinity, we observed connection drops and multiple issues with bluetooth.
After extensive testing, we decided to discontinue with bluetooth for this model and instead rely on the USB cable which maintain quality of sound. With the upcoming bluetooth 5.0 we hope to resolve these issues in our future models.