# Grestar UK to Japan Type A Travel Adapter, 4 USB Ports

Type: Grestar’s UK to Japan travel adapter combines one AC socket with two USB-C and two USB-A ports for charging several devices from one outlet. It is a plug adapter, not a voltage converter, so devices must support the local supply voltage.

- [Original product page](https://bargainpostbox.co.uk/product/grestar-uk-to-japan-type-a-travel-adapter)
- [View offer](https://bargainpostbox.co.uk/visit/grestar-uk-to-japan-type-a-travel-adapter)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: grestar
- Category: Electronics > Electronics Accessories > Cables & Adapters
- Price: 10.19 GBP
- Previous price: 11.99 GBP
- Discount: 15%
- Price checked: 2026-11-12T18:03:14.976Z
- Rating: 4 / 5
- Reviews: 33

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- One AC socket and four USB ports, comprising two USB-C and two USB-A.
- The listing claims up to five devices can be connected at once.
- The listed USB outputs are 5V/3A for USB-C and 5V/2.4A for USB-A.
- The claimed UK Type G to Japan Type A plug conversion does not convert voltage.

## Pros

- Four USB ports alongside an AC socket can reduce the need to bring separate USB chargers.
- A single adapter is claimed to support charging up to five devices at the same time.

## Specifications

### Identity
- Brand: grestar
### Connections and electrical details
- AC outlets: 1
- Plug type: Type G
- Output voltage: 240 Volts
- USB-C output: 5V/3A
- USB-A output: 5V/2.4A
- Input range and maximum load: 100V–250V & 10A \(max 2500W\)
- Destination plug format: Japan 2-flat-pin \(Type A\)
### Dimensions and installation
- Dimensions listed: 6.5 x 5 x 5 centimetres
- Weight listed: 20 Grams
- Alternative dimensions stated in features: 7 x 5.5 x 5 cm

## Before you buy

- This is not a voltage converter. Check that each device supports the destination voltage range before plugging it in, especially heating or grooming appliances.
- The listing is inconsistent about dimensions, giving 6.5 x 5 x 5 centimetres in product details and 7 x 5.5 x 5 cm in feature text. It also gives 100V-240V in the title, 100V–250V & 10A \(max 2500W\) in a feature, and 240 Volts as output voltage in details. Confirm the applicable electrical ratings and size for the selected listing before purchase. The claimed protection features are not independently confirmed.

## A good fit for

- Travellers from the UK who need a Type A plug adapter for Japan and want USB-A, USB-C and one AC socket in one unit.
- People carrying several USB-charged devices who want the listing’s claimed five-device capacity.

## Less suited to

- Anyone needing voltage conversion for a device that is not compatible with the destination supply.
- Travellers who need confirmed dimensions or electrical ratings without checking the listing, given the conflicting figures.

## Customer feedback

The supplied evidence contains aggregate ratings but no customer-comment summary, so it does not show what buyers praised or criticised. The ratings are mostly in the five-star category, but lower-star ratings are also present. Treat this as a limited indication of overall reception, not evidence about USB performance, fit or voltage compatibility.

## Frequently asked questions

### Does this adapter convert voltage?
No. The listing says it is not a voltage converter. Use it only with devices rated for the local supply voltage or a compatible input range.
### Which ports and sockets does it have?
The listing describes one AC socket, two USB-C ports and two USB-A ports, with a claimed capacity of up to five connected devices.
### What USB output ratings are listed?
The feature text states 5V/3A for USB-C and 5V/2.4A for USB-A. It does not establish how output is shared when several ports are used together.
### Are its dimensions clear?
No. Product details state 6.5 x 5 x 5 centimetres, while feature text states 7 x 5.5 x 5 cm. Check the selected listing if size matters.

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## Images

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 1](https://bargainpostbox.co.uk/i/xByKm-b6EFuhrZCByU3O-PiCkra2HRZU5GY0r8bfaLAQRMI49LpcUFloTdtOUFSnvmQjUDDNPsQKLsCo15lk5AXk0pswkgvognvBmiH3BBVqIWhOR2aHtzAD.jpg)

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 2](https://bargainpostbox.co.uk/i/VFAeGTHhyFt6mH74tBN2R3dozhLPKAExKVTUGm-gj-15QTWJAO3frjcQarIA6F3yntqy0xd1t_BJjwev0oLU1j5AjheIHNXLzvtGfsQC4XpBDSTnKYq601TK.jpg)

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 3](https://bargainpostbox.co.uk/i/4Am6fGj9fLkDlplpHpYhKnwcXkeQ7N4T8ZjfPUFt-8Dle0ZRMro5mNC4W_62Whw5dEKL9PbGyewmTA1D9hr3j8Tuh7WMbj-LXbJ7sIuIkYO2Rhgdo0fHf6VT.jpg)

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 4](https://bargainpostbox.co.uk/i/XeuC37WW8TKoqSs7odxIr4FWgRIJk-AurkQzvBHX59XvVMEY6YcOfTT1esluuXtgVO3qdfb-vLPsD_T53bBtdeP8SJ_8fOI_jfHvNEgZtQPlpRiH345OfgFL.jpg)

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 5](https://bargainpostbox.co.uk/i/v1xjN04afvfsGe-tz5ECjK09EFkfGfVVHMgI2CBCfoW4zGdmqM8tPiShRCqoaC8E0J_S-YuVqZIgwTp_fvGk06zUDVhDpfF-s7lkGek5X8SbDGO2bw72I-x-.jpg)

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 6](https://bargainpostbox.co.uk/i/qRX-c-tAAFOwLPvi3jg1zg4epcBOZXAFpzlHwnQ49wZqBK5vIBEUYW4lFpJ5SnC3JaJxqX2cFw86oSRTOuTU60qnoNTKImDzfb4la044IHNnEZxIDIIB4wcV.jpg)

![Grestar UK to Japan Type A Travel Adapter, 4 USB Ports — 7](https://bargainpostbox.co.uk/i/GNm3JQ0UVEmZy80lXH2Kexr4fMsFad3rw2vVq5_JkaguwDrGN2_hz_T7kAXllkkE7bd42CgbqsePArjL53xeBWw7jf17nxhzMC7Wz0AKQQ1AdQ5eUePIEZ1k.jpg)