Plantronics claims that the new Discovery 640 Bluetooth headset is the standard for all its competitors to surpass in the market. Those are pretty bold claims, but the
Discovery 640 does have something going for it by the virtue of being connected to two different Bluetooth cellphones simultaneously, enabling you to switch back and forth between them. Not only that, the Discovery 640 is extremely lightweight, weighing a mere 0.5 oz with a theoretical range of up to 33 feet. Tests have shown that day-to-day use does not yield such great connectivity, but it is bearable. It is pretty interesting to note that you might as well balance out your look by wearing two different Bluetooth headsets if you are a proud owner of two Bluetooth-enabled cellphones. After all, you already have the dough for these cellphones which don't come by cheap compared to lower end non-Bluetooth models. Amazon is carrying the Discovery 640 for $74.99.Pros : Capable of switching between two handsets, saves cost
Cons : Bluetooth range is average, low battery life
Plantronics Discovery 640 Bluetooth headset Source
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