The Plantronics Discovery 640 is a great headset to use if you are looking for something very light and very small. Weighing a scant 9 grams ? or about the weight of two nickels, this Bluetooth headset is very discreet. If you are comfortable using the Ear Gels then you will be happy with the audio and volume produced.
Beware though if this set will be used mainly in a crowded environment (if so, you might want to check out the Gennum nXZEN) since there is no active noise cancellation. The unique implementation of the 2-color indicator light provides a surprising amount of useful information. Lastly, the battery performance and unique charging options make it a perfect headset for not only the board room, but for everyday campus living.
In terms of pricing the Discovery 640 can be found for around $90 (Live Pricing) at online retailers, which is a great price when the MSRP is $149.99!
Legit Bottom Line
For a street price of around $90, this ultra-lightweight headset is hard to beat with all of its rich features and accessories. It is extremely comfortable with a long battery life and it passes one of our biggest compatibility tests: It works great with a Treo 650!