# Sonic electric toothbrush Philips 4100 Series HX3689/44 — built-in Li‑Ion battery, 1 handle, 1 brush head, Daily care mode, lilac

**URL:** https://aio.lv/en/product--philips-hx368944--11681618
**Data updated:** 2026-01-28 13:03 (EET)
**Category:** Electric Toothbrushes
**Manufacturer:** Philips
**Manufacturer code:** HX3689/44
**EAN:** 8720689044127
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 49.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 41.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--philips-hx368944--11681618

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

Philips 4100 Series HX3689/44 is a sonic electric toothbrush for adults with a built-in lithium‑ion battery. It includes one handle and one brush head, offers a Daily care brushing mode, adjustable speed and an integrated timer. Designed for everyday plaque removal and gum care, it provides convenient cordless use and consistent brushing performance.

## Long description

Philips 4100 Series HX3689/44 is a sonic electric toothbrush designed for everyday plaque removal and gentle gum care. The set includes one handle with a built‑in lithium‑ion battery and one brush head. It offers a Daily Care brushing mode, adjustable intensity settings and an integrated timer to support consistent, effective brushing. The toothbrush combines whitening effects with a pressure sensor to protect gums while helping to deliver visibly whiter teeth in one week.
Advantages
The toothbrush uses Advanced Sonicare technology to provide effective plaque removal and gum protection. Two intensity settings let you adjust cleaning power to personal preference, while the BrushSync replacement reminder helps ensure the brush head is changed when needed. A long‑lasting battery enables cordless use for multiple brushing sessions, and SmartTimer with QuadPacer promotes thorough coverage of all tooth surfaces. The built‑in pressure sensor reduces the risk of brushing too hard during whitening and daily care.
Suitable for
Adults seeking daily plaque removal and gum care
Users who want gentle whitening within one week
People preferring adjustable intensity and a compact cordless design
Key specifications
Power source: built‑in lithium‑ion battery
Included items: 1 handle, 1 brush head
Brushing modes: Daily Care
Intensity settings: 2 levels
Timer: integrated SmartTimer and QuadPacer
Pressure sensor: yes
Colour: lilac
How to use
Attach the brush head to the handle, wet the bristles and apply a pea‑sized amount of toothpaste. Select the Daily Care mode and required intensity, place the brush at a 45° angle to the gum line, and guide the brush slowly across each tooth surface. Let the SmartTimer and QuadPacer manage brushing duration and quadrant changes. Rinse the brush head and handle after use and allow them to air dry.
Usage recommendations
Replace the brush head approximately every three months or when the bristles show wear. Charge the toothbrush fully before first use and follow manufacturer guidelines for battery charging to maintain long battery life.

## Specifications

### Power

| Feature | Value |
|---|---|
| Battery type | Built-in battery |
| Power source | Battery |
| Battery life (max) | 336 h |
| Rechargeable | Yes |
| Battery low indication | Yes |

### Features

| Feature | Value |
|---|---|
| Product colour | Lilac |
| Indication light | Yes |
| Purpose | Adult |
| Number of speeds | 2 |
| Adjustable speed | Yes |
| Teeth brushing modes | Daily care |
| Toothbrush frequency (pulsations) | 31000 movements per minute |
| Brush change indicator | Yes |
| Number of teeth brushing modes | 1 |
| Integrated timer | Yes |
| Mobile app support | No |
| Pressure sensor | No |
| Toothbrush type | Sonic toothbrush |
| Timer duration modes | 4 x 30 sec, 2 min |

### Packaging content

| Feature | Value |
|---|---|
| Number of brush heads included | 1 |
| Number of handles included | 1 pc(s) |
| Charger | Yes |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |

## FAQ

### How much does the Philips 4100 Series HX3689/44 sonic electric toothbrush cost, and is it available for purchase?

The price is 49.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Thursday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Philips products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Philips service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: power source, integrated timer, adjustable speed, product colour, teeth brushing modes, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Philips 4100 Series HX3689/44 sonic electric toothbrush?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11681618/67017002_large.webp