Invisible bluetooth phone headset. Hooks into your phone and bluetooths to earpiece. Great when you need to communicate to a 3rd party without giving up your cover. Just think of this as a regular bluetooth for your phone but A LOT smaller.
1. Wire (3W amplifier)
2. Sensitive microphone
3. Earpieces (use 2 pieces together per ear as shown in figure above)
4. 1 pc 5 cm stick