Why You Can Trust CNET Plantronics Discovery 640 review: Plantronics Discovery 640
The Plantronics Discovery 640 is a great Bluetooth headset for a corporate user that travels frequently, as it comes with myriad charging options and a vibrating pocket holster.
Plantronics' Discovery 640 is a great bluetooth headset: light and comfortable, with long battery life. The small unit weighs in at 9g and even ships with three different ear gels so you can be assured of a snug fit, though like other "hookless" designs, we don't recommend jogging with it.
Plantronics Discovery 640
The Good
The Bad
The Bottom Line
Pairing is straightforward, and the Discovery 640 is compatible with every Bluetooth-equipped phone on the market.
The device doesn't include noise-cancelling features or automatic volume adjustment, but we had no problems holding conversations in busy areas like underground railway stations. There's a positive of not including noise-cancelling technology, too: enhanced battery life.
The Discovery provides 5 hours of operation on a single charge, which should see you through a couple of days of heavy use between refills. The pack includes an AC charger, a collection of fittings that enable you to use a mobile phone adaptor, and on the road using a AAA cell. All these extras are provided in a small carry case, making the Plantronics kit ideal for a traveller.
A pocket holster that vibrates to alert you to incoming calls rounds out the feature set, making the Plantronics unit a good choice for anyone that spends a lot of time making mobile calls each day.