Plantronics Discovery 640E Bluetooth headset comparison

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Product name	Plantronics Discovery 640E Bluetooth headset	Plantronics Discovery 640 Bluetooth headset	Plantronic Discovery 655 Bluetooth Headset	Plantronics Discovery 665 Bluetooth Headset	Plantronics Discovery 975
Price	$25.51 to $73.00	Check Prices	$25.47 to $106.00	$37.99 to $82.01	$109.99 to $119.99
CNET editors' rating	stars Overall score: ( stars)	4.0 stars Overall score: 8.0 (4.0 stars)	4.0 stars Overall score: 8.3 (4.0 stars)	3.5 stars Overall score: 7.7 (3.5 stars)	4.0 stars Overall score: 8.3 (4.0 stars)
Average user rating		3.5 stars	3.0 stars	2.5 stars	3.5 stars
Release date					August 20, 2009
The Bottom Line		The Plantronics Discovery 640 is a well-performing Bluetooth headset that offers first-class usability.	The Plantronics Discovery 655 has a great functional design that offers excellent performance.	The Plantronics Discovery 665 is a great little Bluetooth headset with amazing sound quality. But due to its lack of charging options, you shouldn't feel pressured to upgrade from the 655.	Despite its finicky controls, the Plantronics Discovery 975 is a stylish headset with a comfortable fit, a great feature set, and excellent call quality.
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Sound Output Mode	Info unavailable	Info unavailable	Info unavailable	Mono	Mono
Headphones Form Factor	Ear-bud	Ear-bud	Ear-bud	Convertible	In-ear ear-bud
Microphone Operation Mode	Mono	Mono	Mono	Mono	Mono
Connectivity Technology	Wireless - Bluetooth	Wireless - Bluetooth	Wireless - Bluetooth	Wireless - Bluetooth	Wireless - Bluetooth 2.1
Headphones Type	Headphone - Monaural	Headphone - Monaural	Headphone - Monaural	Headphone - Monaural	Headphone - Monaural
Compatible Mobile Devices	Info unavailable	Nokia 3650 Nokia 3660 Nokia 6230 Panasonic X70 Siemens S55 Sony Ericsson K700i	Info unavailable	Info unavailable	Universal
Product Type	Headset - Wireless - Bluetooth	Headset - Wireless - Bluetooth	Headset - Wireless - Bluetooth	Headset - Wireless - Bluetooth	Headset - Wireless - Bluetooth 2.1
Microphone	Built-in	Built-in	Built-in	Built-in	Built-in
Recommended Use	Cellular phone	Cellular phone	Cellular phone	Cellular phone	Cellular phone
Product Description	Plantronics Discovery 640E - Headset	Plantronics Discovery 640 - Headset	Plantronics Discovery 655 - Headset	Plantronics Discovery 665 - Headset	Plantronics Discovery 975 - Headset
Manufacturer Warranty	1 year limited warranty	1 year warranty	1 year limited warranty	1 year limited warranty	1 year warranty
Remote Control	Info unavailable	Info unavailable	None	Info unavailable	None
Full specifications	Full specifications	Full specifications	Full specifications	Full specifications	Full specifications
Buying choices	Amazon.com Marketplace $25.51 In stock: Yes Price from 1 CNET Certified store	E-mail me when this product is available	Lenovo $89.00 In stock: Yes J&R Music and Computer World $34.88 In stock: Yes Amazon.com Marketplace $25.47 In stock: Yes Prices from 5 CNET Certified stores	Amazon.com $37.99 In stock: Yes Dell Home & Home Office $75.99 In stock: Yes Amazon.com Marketplace $42.65 In stock: Yes Prices from 6 CNET Certified stores	Amazon.com $116.94 In stock: Yes Dell Home & Home Office $119.99 In stock: Yes MSG Digital $109.99 In stock: Yes Prices from 3 CNET Certified stores
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