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Philips HX9911 Ad#Electric Toothbrush · Worldwide voltage★4.08JP¥22,980 Philips HX9911 Worldwide
The math
Japan price incl. taxJP¥22,980
Tax-free price (paid in store)JP¥20,891
In USD≈ US$133
 Japan consumption tax 10% (food 8%)
Power & flights
Voltage100–240V
PlugType A plug
Frequency50/60Hz
FlightsOK on the plane
 Country-by-country results below
Kakaku.com rating ★ 4.08
Pros: Premium feel and clean design
Pros: Separate mode button makes switching easy
Pros: Battery life is sufficient
Cons: High-frequency sonic sound is a bit shrill
Cons: Takes over half a day to fully charge
 Pros and cons summarized by us from public reviews

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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 · Worldwide voltage

Price JP¥22,980 · tax-free JP¥20,891
Voltage 100–240V · Type A plug
Source Kakaku.com · 10-23
Electric Toothbrush

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.

BestJapanBuyData updated 2026-10-23 · sources at the end

Lowest online price (incl. tax) JP¥22,980 (shipping not included). At a tax-free shop you pay the tax-free price JP¥20,891 at the register (≈ US$133). How the new tax-free refund works ›

100–240V, Type A plug, 50/60Hz. Will it work in your country? →

Flights: OK on the plane. Built-in lithium battery (≤100Wh): OK in carry-on; better not to check it, and power it off if checked

Kakaku.com rating ★ 4.08/5 (7 reviews), not our own 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

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

Sold at major electronics stores in Japan (Bic Camera, Yodobashi Camera and others); check stock before you go. Find the nearest store.

  • #JapanShopping
  • #JapanElectricToothbrush
  • #Philips
  • #WorldwideVoltage
  • #TaxFreeJapan

Edited 2026-10-23 · prices for reference only · names: 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

Japan price and tax refund

Price in Japan

Lowest online price
JP¥22,980–26,314
Tax-free price
JP¥20,891
In USD (reference)
≈ US$133

Japan price: Kakaku.com, 2026-10-23 (shipping not included)
USD rate JP¥1 = US$0.006377 (2026-10-23) · Prices are for reference only; check in store.

How tax-free shopping works

Until Oct 31, 2026: show your passport at a tax-free shop and pay the tax-free price at the register (at least JP¥5,000 excl. tax per store per day).

Calculate the refund · New tax-free rules explained

Specs

BrandPhilips / フィリップス
ModelHX9911
VersionWorldwide voltage
Voltage100–240V
Frequency50/60Hz
PlugType A
PowerTBD
BatteryLithium-ion
Released2024
Drive typeSonic vibration
ChargingCharging stand / AC charger
Cleaning modes4modes
Battery runtimeTBD
Weight140g
Panel languageTBD

Spec sources: Philips official site, Kakaku.com specifications page

Will it work in your country?

Based on each country's standard voltage, frequency and outlet types. Pick your country to put it at the top.

Country / regionResultWhat to know
Mainland China220V · 50Hz · Type A/I Works as is The voltage range covers the local voltage; you can use it directly
Hong Kong220V · 50Hz · Type G Needs an accessory Different plug shape; you need a plug adapter
Macao220V · 50Hz · Type G/D Needs an accessory Different plug shape; you need a plug adapter
Taiwan110V · 60Hz · Type A/B Works as is The voltage range covers the local voltage; you can use it directly
Singapore230V · 50Hz · Type G Needs an accessory Different plug shape; you need a plug adapter
South Korea220V · 60Hz · Type C/F Needs an accessory Different plug shape; you need a plug adapter
United States120V · 60Hz · Type A/B Works as is The voltage range covers the local voltage; you can use it directly
Thailand220V · 50Hz · Type A/B Works as is The voltage range covers the local voltage; you can use it directly
Malaysia240V · 50Hz · Type G Needs an accessory Different plug shape; you need a plug adapter
Philippines220V · 60Hz · Type A/B Works as is The voltage range covers the local voltage; you can use it directly
Vietnam220V · 50Hz · Type A Works as is The voltage range covers the local voltage; you can use it directly
Indonesia230V · 50Hz · Type C/F Needs an accessory Different plug shape; you need a plug adapter
India230V · 50Hz · Type C/D/M Needs an accessory Different plug shape; you need a plug adapter
Australia230V · 50Hz · Type I Needs an accessory Different plug shape; you need a plug adapter
New Zealand230V · 50Hz · Type I Needs an accessory Different plug shape; you need a plug adapter
Canada120V · 60Hz · Type A/B Works as is The voltage range covers the local voltage; you can use it directly
United Kingdom230V · 50Hz · Type G Needs an accessory Different plug shape; you need a plug adapter
Germany230V · 50Hz · Type C/F Needs an accessory Different plug shape; you need a plug adapter
France230V · 50Hz · Type C/E Needs an accessory Different plug shape; you need a plug adapter
Italy230V · 50Hz · Type C/F/L Needs an accessory Different plug shape; you need a plug adapter
Spain230V · 50Hz · Type C/F Needs an accessory Different plug shape; you need a plug adapter

Flights (all destinations): OK on the plane: Built-in lithium battery (≤100Wh): OK in carry-on; better not to check it, and power it off if checked

This model: 100–240V. Results follow published standards; some buildings or hotels may differ.

Overseas vs Japan-only model

No counterpart model listed yet.

Reviews

Third-party rating: 4.08 / 5 (7 reviews)
Rating source: Kakaku.com, 2026-10-23
The rating comes from a third-party site and is not our own. Pros and cons are our summary of public reviews.

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

Where to buy

In Japan

Sold at major electronics stores in Japan (Bic Camera, Yodobashi Camera and others); check stock before you go.

Find the nearest store

Japanese phrases to show staff · Checkout checklist · Calculate the price after refund

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. See the table "Will it work in your country?" on this page for each country and region.

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.

Related Q&A

Sources

Updated 2026-10-23Prices are for reference only; check in store.MarkdownJSON