The Motorola MINIBLUE is probably the world's smallest Bluetooth headset!  The headset also features an 'in the ear' microphone!

It has some really cool technology that picks up sound from your ear canal.  Motorola says that this will ensure that conversations are loud and clear!

 It is supposed to work even in very noisy environments.  The summary of features are available by clicking on the READ MORE link (below)...

SUMMARY OF FEATURES:

• Revolutionary technology designed around the way your body works
• Built-in speaker and microphone routes voices through the ear canal, reducing outside noise
• Tiny size at only 33 x 41 millimeters
• Talk Time: headset up to approximately 1.5 hours, system up to approximately 7.5 hours using the included portable charging base.
• Works up to 30 feet (10 meters) away from a compatible Bluetooth-enabled phone
• Comptible with any brand of Bluetooth-enabled phone that supports headset and handsfree profiles
• Comes with a chic, metal portable charging base