Our earpiece works with 1.55 V batteries. This battery can power the earpiece for around 5 hours straight. Normally an exam doesn't take more than 2 hours, we still recommend you use a new battery each time you use the earpiece. You can easily do it since we offer each battery for less than a dollar! It's better to be safe than sorry!
Before purchasing, please take a look at our tips on this page: TIPS FOR SHOPPING
For any further question/request please write to sales@linkeltech.com
10 pieces of earpiece battery
The battery works like this:
1. This tiny 1.55V battery goes directly into LINKEL™ MicroEar, as the picture shows above. The side with the engraved inscriptions should face the cap, the side with the "circle" should face down towards the lower part of the earpiece
2. Upon contact, the earpiece will be functional automatically
3. Screw back the cap tightly
Further instructions on how to make the system operational is included in the package.



