# Philips HX9911

- Name: Philips Sonicare DiamondClean 9000 HX9911 / フィリップス ソニッケアー ダイヤモンドクリーン 9000 HX9911 / 飞利浦 Sonicare 钻石亮白 9000 HX9911
- Brand: Philips / フィリップス
- Category: Electric Toothbrush
- Version: Worldwide voltage (100–240V, Type A plug)
- Page: https://bestjapanbuy.com/en/p/philips-hx9911/
- Updated: 2026-10-23

As of 2026-10-23, the lowest online price on Kakaku.com is JP¥22,980 (incl. tax); of the 21 destinations we check, it works as is in 7 and needs an accessory (plug adapter or transformer) in 14.

A classic high-end Philips model with an inductive charging glass, rated 100–240V for worldwide use.

- Good for: People who want a stylish design and travel often
- Not for: Those sensitive to noise or concerned about brush head prices

## Price in Japan

- Japan reference price incl. tax (Lowest online price, shipping not included): JP¥22,980
- Tax-free / after refund: JP¥20,891
- Flights: OK on the plane

## Will it work? (by destination)

| Destination | Result | Notes |
| --- | --- | --- |
| Mainland China | ✓ Works as is | — |
| Hong Kong | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Macao | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Taiwan | ✓ Works as is | — |
| Singapore | △ Needs an accessory | Different plug shape; you need a plug adapter |
| South Korea | △ Needs an accessory | Different plug shape; you need a plug adapter |
| United States | ✓ Works as is | — |
| Thailand | ✓ Works as is | — |
| Malaysia | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Philippines | ✓ Works as is | — |
| Vietnam | ✓ Works as is | — |
| Indonesia | △ Needs an accessory | Different plug shape; you need a plug adapter |
| India | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Australia | △ Needs an accessory | Different plug shape; you need a plug adapter |
| New Zealand | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Canada | ✓ Works as is | — |
| United Kingdom | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Germany | △ Needs an accessory | Different plug shape; you need a plug adapter |
| France | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Italy | △ Needs an accessory | Different plug shape; you need a plug adapter |
| Spain | △ Needs an accessory | Different plug shape; you need a plug adapter |

## Specs

| Item | Value |
| --- | --- |
| Brand | Philips / フィリップス |
| Model | HX9911 |
| Version | Worldwide voltage |
| Voltage | 100–240V |
| Frequency | 50/60Hz |
| Plug | Type A |
| Power | TBD |
| Battery | Lithium-ion |
| Released | 2024 |
| Drive type | Sonic vibration |
| Charging | Charging stand / AC charger |
| Cleaning modes | 4modes |
| Battery runtime | TBD |
| Weight | 140g |
| Panel language | TBD |

## Reviews

Third-party rating 4.08/5 (7), source: Kakaku.com (not our rating).

Pros:

- Premium feel and clean design
- Separate mode button makes switching easy
- Battery life is sufficient

Cons:

- High-frequency sonic sound is a bit shrill
- Takes over half a day to fully charge
- Not compatible with older chargers

## Frequently asked questions

### Can I use the Philips HX9911 outside Japan?

The Philips HX9911 is 100–240V with a Type A plug. Of the 21 destinations we check, it works as is in 7 and needs an accessory (plug adapter or transformer) in 14.

### How much is the Philips HX9911 in Japan tax-free?

As of 2026-10-23, the lowest online price on Kakaku.com is JP¥22,980 including tax. Tax-free or after the refund it is JP¥20,891. From Nov 1, 2026, you pay the tax-included price in store and get the tax refunded when you leave Japan (a fee may apply).

### Where can I buy the Philips HX9911 in Japan?

Sold at major electronics stores in Japan (Bic Camera, Yodobashi Camera and others); check stock before you go. The price we list is from Kakaku.com (2026-10-23); prices in store may differ.


## Sources

- Specs: [Philips official site](https://www.philips.co.jp/c-p/HX9911_70)
- Specs: [Kakaku.com specifications page](https://kakaku.com/item/K0001634660/spec/)
- Japan price: [Kakaku.com](https://kakaku.com/item/K0001634660/) (2026-10-23)
- Rating: [Kakaku.com](https://review.kakaku.com/review/K0001634660/) (2026-10-23)

> Data from BestJapanBuy (bestjapanbuy.com). Please credit and link to the page when using it. Prices are for reference only; check in store.
> Translated with AI; the Chinese version is authoritative.