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Plantronics .Audio 645 USB

alaTest has collected and analyzed 156 reviews from magazines and websites. People are impressed by the microphone and value for money. The portability and comfort also get good feedback, but some have doubts about the reliability.

sound, comfort, portability, value for money, microphone


We analyzed user and expert ratings, product age and more factors. Compared to other Headsets the Plantronics .Audio 645 USB is awarded an overall alaScore™ of 73/100 = Good quality.

Review analysis

(Based on 156 reviews)

Expert Reviews  

User Reviews  

Showing 119 review(s)

Expert Reviews User Reviews
Showing 1 - 10 of 119 Show Reviews: in English | in other languages (7)

Expert review by:

Plantronics Discovery 645 Bluetooth Headset


Expert review by:

Plantronics Discovery 645


The first thing you notice about the Plantronics Discovery 645 is that it comes in a metal clamshell-style box that opens to reveal a variety of small metal cylinders and accessories, all resting in felt fittings. It looks like something Q would hand...

Stylish, attractive design. Sounds great. Comes with a handsome set of accessories. Fits comfortably even when worn without the optional ear hook


This is one slick Bluetooth headset, with clever extras and an abundance of style. It's particularly good for frequent callers who don't want to wear an earpiece all day.

Expert review by:

BFG GeForce GTX 280 OCX


Today we have the GTX 280 OCX on our test bench and will be comparing it to a reference model in a selection of the latest games as well as running it through some high definition playback tests, we will even throw in a few compares to the GTX 260 for...

Expert review by:

The Plantronics Discovery 645 Ultimate DSP


Plantronics, Inc. introduced the first lightweight communications headset in 1962 and is today a leading designer, manufacturer and marketer of lightweight

The Plantronics Discovery 645 Ultimate DSP Bluetooth Headset is a great headset with acceptable range and excellent voice quality. The DSP effectively blocks out some environment noise but allows the 640 model without the DSP to have a longer talk time.

Expert review by:

Plantronics Discovery


If you don't want a Bluetooth headset that's versatile and complicated, the Plantronics Discovery 975 is a great example of a simplified Bluetooth headset that focuses on high-quality wideband audio and above-average noise cancellation. If you're...

Call quality is excellent. It comes with a stylish leather charging case

You can't stream audio. It doesn't include caller ID

The Plantronics Discovery is a great Bluetooth headset if all you're going to use it for is hands-free communication.

Consumer review by:

Love the concept behind this device but sound is horrible.


I really liked the concept behind this device but I was very dissappointed with the sound quality. I really enjoyed the fact that it is small and has a nice carrying case which also serves as a charger. It is easy to pair but the call quality is not...

Carrying charger (with one AAA battery) Small and comfortable

AAA battery dies very quickly, sound quality is bad

Consumer review by:

awesome,best bt I've had


I love this bluetooth. This is my 3rd bluetooth & would have to say the best one. I have small ears & have a hard time finding earpieces that fit in my ear. The over the ear are uncomfortable & a pain to get on. With this you have various size gels &...

in ear gel piece,quality & sound, comfort

none I don't think it has a downside

Consumer review by:

Plantronics Discovery 645 Bluetooth Earset


Best BlueTooth Headset on the market today. Once you get used to the ear bud in the inner part of your ear, you will never use another headset. Plantronics always makes the best headsets.

Small but Great Sound & Voice Quality, Almost unnoticable. Pairs easliy with any cellphone

Ear bud in ear might be issue

Consumer review by:

Plantronics Discovery 645 Bluetooth Earset


It's clear only when in direct line with the Bluetooth device. Turn your head a different direction and loose the signal. I don?t recommend to buy again to anyone.

small and light.easy to charge

Static Lose of signal

Consumer review by:

Plantronics Discovery 645 Bluetooth Earset


I shouldn't have chosen the cheapest price--in spite of high ratings on the website. Malcolm Wireless was slow to respond. Weeks later, I still haven't gotten the replacement device.I've had much better service--much, much better service from

Compact size. Long battery life with battery tube. Noise cancelation works

Product broke within 3 or 4 days of use. Sound got "crackly" and then it quit working altogether. Also, the headset wouldn't lock into the charger tube so kept falling out. It's small size made it dif

Product Specifications

Enjoy simplified mobility with the ultimate Bluetooth headset - the Plantronics Discovery 645. Digital Signal Processing reduces background noise for improved sound quality, and the innovative pocket charger stores a AAA battery for charging headset between calls. Combining cutting-edge technology and a sleek, ultra-light design, Discovery sets the standard in style, comfort and convenience.


Display: No
Integrated Amplifier: No
LCD Display: No
Microphone Boom Arm: No
Multi Compatible Gaming Function: No
Mute Control:No / Yes
Noise Cancellation: Yes
Sound System:Mono / STEREO
Speakers:Mono / STEREO
Switchbox from Telephone to Headset: No
Volume Control:No / Yes


Bluetooth:No / Yes
Connection:3.5 mm Plug / Other Wired Connection / Wireless
USB:No / Yes
USB Dongle: No

General Features

Compatibility:for 4 and more brands / Not Applicable
Form factor:In Ear Headset / Neckband Headset
Product Type:In Ear Headset / Neckband Headset
Type:In Ear / Neckband