O fone de ouvido Bluetooth Argard M10 pesa somente 5 gramas, e pode ser utilizado em stand-by por 100 horas ou por 3 horas de conversação.
Mais discreto impossível!!! Veja as especificações:
* Possibly one of the world’s smallest Bluetooth headsets.
* The headset uses Bluetooth Version 1.2, Class 2.
* An intuitive touch button control system.
* Push the ‘Talk Button’ on the end of the headset to answer and end your calls.
* Volume Buttons are located on the headset so you can control the volume without ever having to access your phone.
* The headset comes with spare earpieces so will fit the larger and smaller lobed person.
* A stylishly designed black charging cradle.
* Requires a mains adaptor (included) for charging.
* A full charge is equal to 3 hours talk time or 100 hours standby.
* Size: 2.3 x 2.2 x 3.15cm.
O Micro Bluetooth Headset é vendido somente fora do Brasil por $197.

fonte: rodrigostoledo.com