Sonicare DiamondClean 9000: 62,000 movements, up to 14 days

The C3 head and what it is for

Philips ships this set with a C3 Premium Plaque Control head, which uses a cluster of dense, stiff bristles in the centre to polish teeth. The listing claims up to 10 times more plaque removal and up to 100 percent more stain removal, both as manufacturer figures.

Sonicare Fluid Action is described as driving fluid between teeth and along the gumline, helped by the high movement rate. That is the core sonic idea: the bristles sweep quickly while the agitated toothpaste and saliva reach gaps.

Twelve settings explained

Amazon lists 4 modes, Clean, White+, Gum Health and Deep Clean+, each available at three intensity levels. Philips counts that as 12 brushing settings. For tender gums, Gum Health on the lowest intensity is the obvious starting point.

Pressure is handled by a light ring at the base of the handle that lights up when you press too hard. There is no automatic intensity drop described, so the brush relies on you reacting to the light.

App, reminders and charging

The Sonicare app pairs with the handle for guided brushing and personalised tips. A replacement reminder tracks how often and how hard you brush, then prompts a head change when it judges the bristles are worn.

In the box you get the handle, one C3 head, a charging stand and a USB charging travel case. Philips notes a UK two-pin bathroom plug. The listing calls the colour white and says packaging may vary.

Versus the 9400 and the 7900

The Sonicare DiamondClean Smart 9400 matches the 4 modes and 3 intensities, but adds an A3 and a G3 head and a charging glass, without a stated battery figure. The Sonicare 7900 shares the 62,000 movements and mode names, swaps the light ring for a pulsing handle and includes four W2 heads.