The secret to longer-lasting freshness is reduced oxygen levels. Hitachi’s original preservation extracts air to maintain approx. 0.8 atm of vacuum preservation. With unique Platinum Catalyst, chilled meat, fish and dairy products are kept fresh and nutritious, and ready to cook.

Vacuum means the space where the pressure is lower than the atmospheric pressure. The pressure in the Vacuum Compartment is about 0.8 atm, which is lower than the atmospheric pressure, hence, Hitachi considers this a vacuum.

^* Platinum Catalyst technology is exclusively in Hitachi, available in vacuum compartment and vegetable compartment.

DHA Value in Mackerel Stored after 7 Days^*

^* Tested by Hitachi. Tested Model : R-WX74K (equivalent model to R-ZXC/ZX740K). K-value is an indication of freshness. The lower the value, the fresher the item. K-value of 20% or higher is not suitable for eating raw and K-value of 60% or higher is not suitable for consumption. The effect may differ depending on types or freshness of food stored, and does not extend to best-before and expiration dates.

^* Tested by Hitachi. Tested Model : R-WX74K (equivalent model to R-ZXC/ZX740K). K-value is an indication of freshness. The lower the value, the fresher the item. K-value of 20% or higher is not suitable for eating raw and K-value of 60% or higher is not suitable for consumption. The effect may differ depending on types or freshness of food stored, and does not extend to best-before and expiration dates.

^* Tested by Hitachi. Tested Model : R-WX74 (equivalent model to R-ZX740KS). The effect may differ depending on types or freshness of food stored. This effect does not extend to best-before and expiration dates, and does not guarantee the indicated shelf life.

^* Tested by Hitachi. The effect differs depending on the models and conditions. Between lamb stored in the two different freezers for 10 days and thawed for four hours at a room temperature of 23°C.

Hitachi innovation at its finest and most consistent : the sealed pressure-resistant vacuum realises and maintains the vacuumed environment. A vacuum pump extracts air and reduces oxygen to achieve approx. 0.8 atm (atmospheric pressure) throughout usage.

Vacuum means the space where the pressure is lower than the atmospheric pressure. The pressure in the Vacuum Compartment is about 0.8 atm, which is lower than the atmospheric pressure, hence, Hitachi considers this a vacuum

^* Platinum Catalyst technology is exclusively in Hitachi, available in vacuum compartment and vegetable compartment.

Now, you can truly chill. Store your food without freezing by selecting a suitable temperature for the stored items, and help prevent deterioration of flavours and texture.

Moisture Retention in Spinach Stored after 7 Days^*

^* Tested by Hitachi. Tested Model for Aero-care Vege Compartment: R-WX74K (equivalent model to R-ZXC/ZX740K), for Moist Vege compartment: R-G6700D. The effect may differ depending on types and amount of food stored.

Retain Vitamin C in Orange Stored after 7 Days^*

Initial Value
(78.2mg/100g)

 

100%

Moist Vege Compartment

 

84%

Aero-Vege Compartment

 

92%

^* Tested by Hitachi. Test model for Aero-care Vege Compartment : R-WX74K (equivalent model to R-ZXC/ZX740K) , for Moist Vege compartment : R-G6700D. The effect may differ depending on types and amount of food stored.

The lower 2 shelves are kept at approx. 2°C. This is lower than the regular refrigerator temperature, so your items stored here retain their freshness. The sensor detects temperature changes and adjusts the cooling power to maintain the 2°C temperature in the right lower compartment.^*

^* Tested by Hitachi. The effect may differ depending on conditions and amount of food stored.

Delicious Freezing technology seals in the original textures, flavours and nutritional value of fresh and cooked products. This is achieved by freezing food very quickly past the maximum ice crystal formation zone on a big aluminium tray.

^* Tested by Hitachi. The effect differs depending on the models and conditions. Between lamb stored in the two different freezers for 10 days and thawed for four hours at a room temperature of 23°C.

Vitamin C Content of Broccoli

(mg/100g)

Raw Broccoli
Initial Value

 

149.8mg

Regular Freezing

 

94.7mg

Delicious Freezing

 

115mg

^* Tested by Hitachi. The effect differs depending on the models and conditions. Between cooked broccoli that was stored in the two different freezers for 10 days.

Gelatinization Degree of Rice

Gelatinisation Degree (%)

Freshly-cooked Rice

 

100%

Regular Freezing

 

93.3%

Delicious Freezing

 

94.7%

^* Tested by Hitachi. The effect differs depending on the models and conditions. Between cooked rice that was stored in the two different freezers for 10 days and thawed thereafter.

In Frost Recycling Cooling, chilled air is generated by frost formed in the evaporator. This is recycled by being sent to every compartment to cool down – even when the compressor is not running. Through such a system, energy consumption is reduced.

Download the Application (Please click the App Store/ Google Play logo)

^▵ IoT mobile application can control the main functions of the refrigerator, user please refer to AHHK website for details, the application may change without notice.

^▵ IoT App is only applicable to Hong Kong.

Manage your purchase items by purchase date and the registered expiration date, to facilitate grocery shopping.

• Food Management
  Video

Change or view the mode setting or conditions of your refrigerator.^*

You can view the number of door opening^* in the application.

• Remote Control
  Video

^* Only shown the number of door opening of the refrigerator, ice Making compartment, lower freezer and vegetable compartment.

Sends text to your smartphones, to notify you if the door is left open.

• Door Alarm
  Video

Flexible access to your support information such as viewing user manuals in your hands.

• Support
  Video

• Number of user connected to the Hitachi refrigerator: 5
• If user wishes to disconnect the Wi-Fi, please keep pressing Vacuum to switch off the WLAN and Wi-Fi.
• If the Hitachi refrigerator is power off, user needs to reconnect refrigerator to wireless LAN again.
• If your provided email address (e.g. Yahoo Mail, Hotmail etc.) cannot receive any verified code, user may needs to use another email address (e.g. Gmail, etc.) for registration.
• For security reason, please use a wireless LAN router that can set WPA2 or WPA (both of them are TKIP or AES) as the encryption method.
• The communication standards need to correspond to any of IEEE 802.11b / g / n (2.4 GHz only).
• Please use Android5.0、iOS10.0 above operating system, connect with Internet and wireless LAN, Android are trademarks or registered trademarks of Google LLC.
• The application is free to use, download and use the application may charge mobile data cost.
• Please agree the terms of use and the privacy policy of application.
• The contents of services, screen design, functions, etc. of the application may change without notice and the service provided may be terminated without notice.
• The application is not guaranteed to run on all smartphones.
• WPA^TM, WPA2^TM are trademarks of Wi-Fi Alliance.

Auto drawer technology provides a seamless opening experience. Even if, the compartment are fully packed, lower freezer and vegetable compartment drawers can be opened automatically just by touching a button.

^* Available for R-ZXC740KH, R-WXC740KH and R-WXC670KH