The magnet came off after 8 months and then it couldn't brush while it sounded like a broken motor. I had exactly the same problem with an IO 9, in a similar time frame...

Perfect. I had older models before. The io7 is much better. And fast charging. Battery life lasts up to a week with 2 uses per day

After two months of use, the impressions are excellent.
After 6 months, I deduct (initially) one star due to the battery that has started acting up, not only because its autonomy has decreased but mainly because it suddenly drops from 50% to zero.

Well, the toothbrush with magnet technology is amazing! I used to use electric oral b 3D brushes for years, etc., and I decided to try the new iO with a magnet. Huge difference in everything. No comparison to the old ones, in terms of how the brush head attaches to the body of the electric toothbrush. Excellently designed to withstand time. It has 3 indicators on the light for the pressure you apply while brushing. White for low pressure, green for ideal, and red for high. It tells you to change the brush head every three months! It charges quickly, maximum of 3 hours for a full charge. I consider the Series 7 to be value for money. Series 8 has a colored display (unnecessary) and an extra program (also unnecessary). While Series 6 has the charger of the old generation, taking 12 hours for a full charge. One of the few purchases that satisfied me and more.