32. Simple bluetooth earphones

As technology progresses, so is our way of listing to music of some sort. Wired earphones are a way to go, allowing us to listen without anyone noticing, and so they are quite useful. The only problem that these devices suffered is that they can get entangled, which can make them very difficult to get around that. Over time, they can deteriorate to the point where you can hear on one side.

<Entire unit>

However, Bluetooth earphones have none of these problems. While it's true that they require a separate set of batteries and the fact that it's somewhat pricey, they are still convenient in terms of reliability.

<Modifications>

It can also be assembled, using various parts such as the 3.5mm AUX Bluetooth module, these pairs of ear-pieces, and even a separate Li-ion battery. You first need to disassemble the unit to get to the circuitry. There, you then need to strip the wires and tin them from the earpieces to make it easier. And then, solder the wires to the earpieces to the audio jack-respectably to the channels and ground.

Once that is done, you can close the unit, and if necessary, you can solder another Li-ion battery in parallel to the other battery to extend its life.