With fabulous noise cancellation, and a raft of nice features, BlueAnt�s Z9 Bluetooth Headset delivers loud and clear. It�s tiny and light, and holds enough of a charge to talk almost all day. For the sound quality the Z9 puts out, I�ll put up with its Martian user interface, but I won�t carry the Quick Start Guide around. I�ll just answer and disconnect from the Treo screen and not bother with the extensive extra features that entail a codebook to operate.

Criteria  Rating Design 5 Usability 4 Sound Quality 5 Cost/Benefit 5 Overall (not an average)	Pros Light weight Extremely sophisticated noise cancellation Good talk and standby times USB-updatable firmware Excellent incoming and outgoing sound quality Supports three Bluetooth device pairings
	Cons Encoded button pushing Ear hooks merely adequate Status messages are blink-encoded

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