BESTEK MRJ201GU Voltage Converter 300W
- Plug Type: Type E
- Input Voltage: 220 volts
- Output Voltage: 110 volts
- Number of Outlets: 3
Last refreshed Sep 9, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Does the specific job of stepping foreign voltage down to 110V for low-power electronics, but the 300W cap means it isn't a substitute for a plug adapter if your devices are already dual-voltage.
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ASIN: B0G5XNTT3JModel: MRJ201GUCategory: International Power Adapters
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Overview
A 300W step-down voltage converter from Bestek that converts 100-240V international power to 110V for US devices, bundled with 5 plug adapters covering Europe, the UK, Australia, Japan, India and South Africa.
This converts voltage in one direction only, foreign power down to US 110V, so it's for Americans traveling abroad with US-spec electronics, not the reverse. The 300W ceiling is a hard limit the listing repeats twice, specifically ruling out hair dryers, kettles, coffee makers and irons, the exact appliances people assume a travel converter can handle. Four USB ports alongside 3 AC outlets means it's meant to be the one hub plugged into a single wall outlet rather than a single-device converter.
- 300W step-down conversion, 100-240V to 110V
- 3 AC outlets, 4 USB ports (USB-C 20W)
- 5 included plug adapters: Type G/D/M/AU/US
- NRTL safety tested with overload protection
Who it's for
US travelers bringing laptops, cameras and phone chargers abroad who need single-voltage US devices to run on foreign 100-240V power. Not for anyone wanting to run a hair dryer or other heating appliance overseas.
Pros and cons
- Converts 100-240V down to US 110V for single-voltage devices
- 3 AC outlets plus 4 USB ports, including 20W USB-C, run 7 devices at once
- Includes 5 plug adapters covering 160+ countries
- 300W hard limit excludes hair dryers, kettles and other heating appliances
- Only converts voltage one way, not for foreign devices used in the US
Performance notes
Step-down converters like this transform AC voltage rather than regulate frequency, so output is fixed at 60Hz regardless of the input, which matters for a small number of devices sensitive to the 50/60Hz difference. The overload and short-circuit protection is standard NRTL-tested safety circuitry, worth checking for on any converter running multiple devices at once.
Specifications
| Brand | BESTEK |
|---|---|
| Model | MRJ201GU |
| Dimensions & fit | |
| Item Dimensions | 6 × 1.3 × 3.1 inches |
| Capacity & performance | |
| Output Voltage | 110 volts |
| Power & efficiency | |
| Input Voltage | 220 volts |
| Power Source | Corded electric |
| Construction & materials | |
| Color | Ivory White |
| Warranty & support | |
| Warranty Description | 1.5 years |
| Other details | |
| Plug Type | Type E |
| Number of Outlets | 3 |
| Number of Items | 1 |
| Mfr Part Number | 201GU-WH |
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Frequently asked questions
Can the Bestek converter power a hair dryer overseas?
No, the listing specifically excludes hair dryers, kettles, coffee makers and irons regardless of wattage, to stay under the 300W ceiling.
What plug adapters come with the Bestek converter?
Five adapters covering Type G, D, M, AU and US style outlets, for use in more than 160 countries.
How many devices can charge at once?
Up to 7: three AC outlets and four USB ports, one USB-C at 20W, as long as combined draw stays under 300W.