As standard both come with a 2 year warranty, this can be extended to 3 years, if you register the brush online.

As the name implies this mode is more gentle. It is designed to offer a softer, but thorough clean. It helps those with sore or inflamed gums, but reducing the number of movements in the brush head, making for a more comfortable brushing experience, until the sensitivity has gone or reduced. This mode is great if you are suffering from gum disease. Plaque is a harmful substance that builds up on teeth and around the gumline and you want to remove this as effectively as possible. One of the biggest differences is that the Pro 2 2000, which is the more premium model offers an extra cleaning mode. The image below is a comparison chart that shows the main models available from Oral-B today, along with the features and functions each offer. In my mind, therefore, the 670 becomes worthwhile if it is cheaper to buy it than the 600 plus the other two items separately.

The Oral-B iO has been redesigned from the ground up. From the motor to the handle, to the brush head, it has all changed. On the very bottom of the brush handle is a recess, into which the pin on the charging stand connects too. This price does exclude the cost of water, toothpaste and electric to charge it. This price also works on some assumptions, but you get a rough idea.

At the time of writing and based on one user, the cost of the Pro 600 is 5p per day over 3 years compared to the 6p of the Pro 650. With some variants you will get a design printed on the case. This is a leafy pattern and is typically pink or blue in colour. It makes the case stand out a little more and be a little less boring. Whilst there is nothing particularly bad with an NiMH battery, Lithium-Ion (Li-Ion) tends to be more common and popular now.There is no battery in the case, to charge the brush and anything connected via the USB cable the case has to be connected to mains power. With either the Pro 600 or 650 during a cleaning cycle at 30 second intervals, you will get an audible and visible notification to change quadrant via a slight pause in the brush head movement. When this happens it is time to change quadrants. Whether the supplied head you find suitable or not will be a personal decision. The good news however is that these brushes accept a range of different brush heads that are engineered to achieve different things or may suit your preferences better. There are 6 main types of brush head, these are:

It used to come with a travel case but nowadays, it comes with Oral-B Pro-Expert deep clean toothpaste. If you would rather have a travel case instead of toothpaste as an add-on, go for . There is a bit more context that can be added around these differences to better understand why the two models exist and how one might be better suited to you, so please find the more detailed explanation of this below. The Pro 1 680’s handle is water resistant. This means a rinse under the tap, or even used in the shower should be fine. Just make sure you don’t fully immerse the brush in water. Place these brushes side by side and it is almost impossible to tell the difference between each of them. Both come with a premium travel case and a 2+ week battery life. A visible pressure sensor, 2 minute timer and pacer are built-in too. iO Series vs Genius X

My hand’s on time achieved a maximum of 9 days or 18 brushing sessions of use. This is based on brushing twice a day for 2 minutes each time. It is important to try and protect the brush head a little from damage as these are what do the cleaning and damaged bristles can actually cause more damage than you think. Box contents in either of these brushes is fairly limited in comparison to more premium brushes like the Pro 6000, but included is what you need. Whilst the Genius is the premium brush it offers inferior battery life. Our testing has confirmed that the 9000 offers 12 days of usage time compared to the 18 days on the Smart 6.