Do not waste your money on this item.
I have had this item for about 2 weeks now. I have to admit it worked just fine for until now. The past few days the sound has started to break up, like a blown speaker sound. Now it is very hard to hear the people talk.
Not happy with it at all now.
Good things; it connects perfectly and the change last a very long time. That is all good, but you can't understand the person you are talking to.
Just damn...

When you look at ratings, if you are like me, you try and judge their validity based first on the competence of the author. Do they understand the technology? Do they get how to optimize its location so callers can hear you? etc?

I searched for a long time for a solution. Not just hands free, but a noise cancelling solution that did not torture my callers with road noise. This is it. I looked at a lot of Bluetooth radio replacements, but none of them had noise cancellation. Tremendous solution for less than $60.

Pros: Incredible value
"¢ No road noise - true noise cancellation
"¢ Instant set up - connects to phone easily
"¢ Magnetic attachment to the clip - easy to remove and charge
"¢ Tremendous volume - you can hear callers with ease
"¢ Reported good quality - microphone picks up my voice well
"¢ Instantly connects with your calls, every time - automatic
"¢ Long battery life - leave it on in standby mode

Cons
"¢ After a week's use I have not found any

Pretty darn impressive. Since I use the phone every day for work and for personal use in my vehicle and the vehicles built in Bluetooth was worthless, I decided to purchase this one based on the reviews. It does not disappoint! It easily connects to two phones simultaneously of different OS - Apple & Android. If I receive a call before I've turned the power on, the SuperTooth Buddy will connect quickly enough and answer the call with the push of a button. Very slick. Another benefit. Let's say you walk into a store out of range of the SuperTooth. When you return you will hear the SuperTooth beep letting you know it just reestablished the connection to your phone(s). Another huge advantage of this is the mount, which is a very clean design. There is a small clip that clips to your visor. Both sides have a large inset where the SuperTooth's magnet will click into place. So no matter what orientation you have your visor, up/down or swung over to the side window, if the SuperTooth ends up on the wrong side just pull it off and let it snap into place on the other side within seconds! Also, the charging port is a standard micro USB instead of some proprietary connector.
I dropped one star because the noise reduction is not "the best" but for the money it's great. This thing isn't perfect by any means, but I have to say I own around 4 different Bluetooth headsets and this was great addition and it kept me from having to have one stuck in my ear the entire day.

June 5, 2017 UPDATE:
It's been 1 ½ years using this device roughly 10 times a day for 5 or 6 days a week. I often remove it from the car and stick it to the machines that I am working on so I don't have to use my BT earpiece. I've dropped it at least one time and it has been exposed to light rain. Although I'm careful with my electronic devices, this little guy has been through a lot just from heavy everyday personal and work use. Like the Energizer Bunny, it keeps going and going and going. The volume and clarity are still great. The battery life is nothing short of amazing. If I could give it 4.5 stars I would. Still the only slight reduction (.5 of a star) is for lack of sophisticated noise reduction, although it truly has NOT been a problem. If or when this ever fails me I will purchase it again in a heartbeat.

Super-SUPER bluetooth speakerphone. Very easy to use. A little more than some competitors, but according to reviews, this one has the best ratings, hands down. Clear voice transmission. Has a TREMENDOUS battery life! 1,000 hours on standby - that's over a month. Haven't kept up with precise use, but was delivered mid-to-late August and today (30Sep15) still using initial charge, i.e. have only charged it ONCE! With that battery life, one can leave it on 24/7 so anytime you get into your car, it automatically connects to your phone. One funny characteristic to be aware of... if you do leave it on 24/7, remember that if you are within 30 to 40 feet of your car and place a call (or get a call) on your phone...the device in your car will "pick up" and you can't talk on your phone.

I actually purchased 7 competing Car Bluetooth Speakerphones to be used for phone calls and my WAZE GPS app. I kept the best one and returned or sold the rest. I know this sounds a bit eccentric so I decided to share my experiences and opinions so you don't have to repeat my silliness.

This type of product is extremely useful, and actually essential in New York, where hands free telephone operation while driving is the law. Ironically, I believe this genre of product will be obsolete within the next several years as more and more cars have built in blue tooth.

My priorities in evaluating these products, in order of importance to me, were (1) voice clarity (incoming; I really have no way to test outgoing clarity); (2) ease of use and operation while driving; (3) interval between charging times (4) Value

The 7 products I tested were this product (Supertooth Buddy); the higher end sibling to this product Supertooth HD; Jabra Freeway; Jabra Cruiser; Motorola Roadster Pro; Motorola Roadster and Motorola Roadster II

All 7 units are reasonably priced; the Supertooth Buddy is the cheapest (The Roadster Pro and Supertooth HD the most expensive).The Supertooth Buddy is marketed under different names that are even cheaper than the Supertooth Buddy.

All Seven products did what they advertised; enabled the user to have a conversation hands free while driving. Each of the products had a long interval between charges; The Supertooth Buddy (and its high end sibling Supertooth HD) were the best and the Motorola Roadster Pro the worst. There wasn't a huge difference between any of the seven except the Motorola Roadster Pro which needed to be charged a lot more than the rest. All seven products were visor mounted. All seven products paired painlessly with my iPhone.

All seven products were at least reasonably clear for incoming calls. The best was my final choice; the Jabra Freeway. TheSupertooth Buddy was the least clear but still very intelligible.

The Jabra & Motorola products have an "FM" option which routes the incoming voices to the car's audio system. The FM output is better than of the unit's individual speakers (on my car anyway) although the Jabra Freeway's internal speaker sound was so good that the FM was not that much better. The best FM output was on the Jabra Cruiser. However the main drawback in using the FM output was that it monopolizes your sound system; you can not listen to the radio or anything else on your car's audio system (i.e. Cds, Navigation system, etc) because your sound system is tuned to 88.x. Also, the sound has static sometimes as an FM station may be competing for that dial spot especially on a long drive as the competing station's signal strength improves.

All of the products except for this product, the Supertooth Buddy can be used for some voice commands including hands free dialing. The Supertooth HD and Jabra Cruiser actually stores your phonebook and can call any contact by voice command. With most of these products, you use your phone's own internal voice commands. On the iPhone this is a quick and easy 2 step process; first summon Siri and then ask Siri to dial the number. Once you get used to it, it's painless and quick. I assume on the android and other smartphones it is very similar, However this feature is NOT available on the Supertooth Biuddy.

The supertooth Buddy (and its sibling the Supertooth HD) have very minimal controls and buttons. There is definitely a learning curve for using the Supertooth products. The Jabra Freeway (my first choice), has the easiest controls. The Motorola products and the Jabra Cruiser were in the middle.

The supertooth Buddy is smallest of the 7 the supertooth HD right behind; The rest about the same size except for the Motorola Roadster Pro which is very large compared to the rest. I used the Roadster Pro the least because it was too big for my car.

All the products worked with WAZE seamlessly although I had to reconfigure my telephone Bluetooth settings to use the Jabra products. Before making the adjustments, it would always say "call ended" whenever finishing a routing instruction

The Motorola Products appear to come with really useful software; I say appear because they do NOT work at all with the iPhone. This is an interesting marketing decision by Motorola since the iPhone is the largest selling cell phone.

I chose the Jabra Freeway because it was the clearest and the easiest to use. I may have been swayed in favor of the Motorola Roadster II if the software worked with my phone although I still think I would have chosen the Jabra Freeway because the sound is just that much better. The best things I can say about the Supertooth Buddy is that it does what it claims to do, it's charge lasts a long time and it is the cheapest.