Philips Sonicare 4100 HX3681/23: simple controls and timed prompts

Check charging and replacement heads

The prompts are straightforward: a two-minute brushing timer and pacing signals every 30 seconds. The manual offers low and high intensity, while the automatic head reminder depends on a BrushSync smart head. Plan the charging setup before opening the box: the USB base needs a suitable adapter, and a full charge can take up to 24 hours. Confirm the included head on the exact seller’s package.

The details that matter

The white HX3681/23 keeps daily controls straightforward while adding timed prompts and pressure feedback. Check the complete model code and included head when comparing bundles. Its USB charging base needs a suitable wall adapter, and replacement heads are a recurring part of ownership.

What stands out

• Timer, pacing and pressure feedback provide prompts without an app workflow.
• Replaceable click-on heads preserve the handle between head changes.

Where to pause

• A suitable wall adapter must be supplied separately.
• Full charging can be slow; head replacement remains an ongoing consumable need.

Make the decision

Check HX3681/23, its head and charger contents together. Decide whether timed prompts and pressure feedback suit the routine you want. Include a compatible wall adapter and replacement heads in the ownership plan.

Think about the fit: People looking for simple powered-brush controls and replaceable heads

Check before buying: HX3681/23 model code, C2 head, charger contents and replacement-head compatibility

Quick answers

Manufacturer references

Product pages, manuals and care guidance from the manufacturer. These links go to the manufacturer, not to an Amazon price or purchase page.

• Philips HX3681/23 official page (manufacturer reference, opens a new tab)Manufacturer reference
• Philips HX3681/23 current support and documentation (manufacturer reference, opens a new tab)Manufacturer reference
• Philips 3000/4000 series manual linked from HX3681/23 support (manufacturer reference, opens a new tab)Manufacturer reference