Highlights

Bluetooth-enabled technology

• Simplified Mobility: No extra cables. Works with your cell phone charger.
• Extended Talk Time: Up to 15 hours with AAA charging accessory.
• Ultra Light and Comfortable: Discreet, in-ear design weighs only 9 grams.

• "I can rely on a Plantronics headset powered by Speech Phone instead a keyboard and dial pads to dictate e-mails, initiate telephone calls, and execute software commands using nothing more than my own voice. It's amazingly easy and comfortable. It saves me time and money." —Valdi
• "The Discovery 640 has great audio quality and is very light. It definitely makes having phone conversations while driving much easier and safer." —Mike
• "I run my own business and as it grows I've found that clients call when I`m on the road. I purchased the Discovery 640 because I wanted a light, easy to use headset. It's what I wanted and more. It has great sound quality, its long lasting, and the Plantronics support staff is great. I'm extremely pleased with the 640 and with Plantronics." —Bruce, TX
• "I love the Discovery 640! I use it everyday; in and out of the office and at home. Sometimes I even forget I have it on." —Brandon
• "What a superior product you have made!! I purchased the Discovery 640 headset there is no static and clarity on both ends is excellent! This is the best headset out there!!!" —Doug, HI
• "What an incredible piece of engineering! This is the perfect marriage of form and function. Small, extremely lightweight and crystal clear sound. The Discovery 640 has made every daily task involving communication a breeze. Thank you!" —Rick, MO
• "The Plantronics Discovery 640 is by far the best I have ever used for my Blackberry. The ear bud makes a perfect fit, and the penlight recharger is ingenious! Everyone I show and demonstrate this to immediately wants one." —Stephen, NY
• "I forgot I had placed my Discovery 640 in my shirt pocket and remembered when I took the shirt out the dryer! It still works! Same crystal clear sound as before. Plantronics just became my product of choice and my recommendation to anyone looking for a great headset." —Willard, HI
• "I was nervous seeing my colleague driving in the UK with his hand-held phone in one hand! With the Discovery 640, I can connect two phones to one headset and I have no fuzz speaking while driving. Great product!" —Miguel

Downloads

• Data Sheet
• User Guide
• Interactive Bluetooth Pairing Guide
• Family Data Sheet

Awards

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• Plantronics Discovery 925
• Plantronics Discovery 655
• Plantronics Discovery 610
• Plantronics Discovery 665
• Plantronics Discovery 925
• Plantronics Discovery 925
• Plantronics Discovery 650E