Professional Class offers:

Noise Isolation and reduction ; volume control ; each with its own special function and design ; Li-poly Battery from Japan to prolong talking and stand by time (includes all standard functions and more)

Standard Class offers:

V2.1 + EDR ; auto paring with no pass code (simply connect bluetooth & play) ; wide selection of color and style to fit users needs ; comes standard with warranty, instructions, charger, 2 ear hangers, and the Bluetooth earpiece itself