Just push the earpiece into your ear. We supply the invisible earpiece with Bluetooth. The Bluetooth can easily be paired with your phone and has a loop that you wear around your neck under clothing. All supplied in presentation box complete with batteries.
Size of invisible earpiece: 3x5x7mm.
Receiving distance between earpiece and loopset/Bluetooth: 50-70 cm.
Battery life for invisible earpiece: About 5 hrs.
Battery: Standard Zinc-Air 337
Audio bandwidth: From 300 Hz to 4 KHz.
Size of Bluetooth: 70x25x15mm
Battery: Standard AAA