DOACE350W Voltage Converter US to Europe - 220V to 110V Converter for European Travel with QC+PD Chargers for Using Most U.S. Devices Abroad - Hair Straightener Shaver Toothbrush Laptop Camera Phone

Excellent item... so far. I bought two to place in my condo in Chile to plug in computer power supplies, a printer, phones, shavers, etc. The USB outlets are very handy, along with the AC plug spacing, that accommodates most AC/DC/voltage converter plugs that are of idiotic widths that can't be plugged in adjacently to most power strips. I have used them for about a month without failure.

I like this high-voltage converter。Firstly：the 220V to 110V converter is suitable for multiple countries。 Secondly：equipped with 4 travel plug adapters that can be used in multiple countries。Thirdly：automatic adjustment of voltage and frequency。 Fourthly：it supports multiple electronic products and can charge multiple devices at high speed simultaneously。 Fifth: Built in overcurrent, overload, overheating, and short circuit protection ensures that any American appliance will not burn out in any country。Sixth: Portable and low-noise。

Took this to Europe and it worked like a charm. My U.S. devices—laptop, toothbrush, hair tools—all ran smoothly. The USB ports are super handy too. Compact and reliable, no overheating or weird noises. Total lifesaver when traveling!

Best thing I bought for my trip to Europe. One thing with all necessary conversions for plug outlets.

If you’re a globe-trotting adventurer or a business traveler, the DOACE 350W Voltage Converter is the unsung hero you didn’t know you needed! This powerhouse of a converter lets you take your favorite 110V devices anywhere—whether it’s Australia, Europe, or the UK—with zero compatibility worries.⚡ Seamless 220V to 110V Conversion! – Say goodbye to fried electronics and hello to safe, reliable power for your hair straightener, laptop, phone, and more.🔄 50Hz to 60Hz Transformer! – If you’ve ever struggled with frequency issues abroad, this converter ensures smooth performance for all your devices.🌍 Multi-Country Plug Adapter Combo! – With built-in adapters for AU, UK, and EU, you can plug in anywhere like a pro.🔥 350W of Pure Power! – Handles high-wattage devices effortlessly, so you can use everything from hairdryers to gaming laptops without a hitch.👜 Compact, Lightweight & Travel-Ready! – Toss it in your bag and power up with confidence wherever you land.Rating: 10/10 – Travel Smarter, Charge Faster!✅ Pros:✔️ Flawless 220V to 110V conversion✔️ Handles 50Hz to 60Hz transition smoothly✔️ Works with multiple plug types (AU, UK, EU)✔️ Compact, lightweight, and easy to carry✔️ Powerful enough for high-wattage devices❌ Cons:❌ Too good—you might start packing extra gadgets just because you can!For a hassle-free, worry-free travel experience, the DOACE 350W Voltage Converter is an absolute must-have. Wherever you go, stay powered up and unstoppable! 🔌✈️🔥

I just used it as a regular power outlet extension and heard no noise at all. 350W plus two Type-C and two regular USB ports are enough for a laptop, iPad, and iPhone charging. It gives another four adaptors, but I only saw three of them before in the UK, China, Hong Kong, and the US. It should cover 99% of your travel needs. It's super light even with all the accessories in the travel bag. It charges my iPhone from 20% to 89% in about half an hour.

TL;DR:I have done a lot of research and HIGHLY recommend the DOACE 350W Voltage Converter, sold on Amazon. It is a voltage converter that will ALWAYS output ~120V. I have been testing a lot of other cube-type adapters/converters, and even other converters that look like this one.None of the others have been consistent or have output a safe voltage in my opinion, and those others were all returned back to Amazon. Also, the cord on this device is European but it does come with 4 adapter plugs and a carry pouch!TESTING:I used a Fluke 115 TRMS meter for measurement testing. All testing was done here in the USA with a selectable AC bench power supply. The power supply was 120V 60Hz input and could output 200V, 220V, 230V, or 240V AC in either 50Hz or 60Hz at all voltages mentioned.My testing of this device was consistently 118V output regardless of the input voltage (tested with 120V USA Mains power from the wall, as well as 200V, 220V, 230V, & 240V inputs from the selectable power supply).The DOACE 350W Voltage Converter will ALSO convert frequency. My testing was consistently 60.1Hz output regardless of the input frequency (tested with 50Hz & 60Hz inputs).As advertised, this device can be used with 100V to 240V 50Hz or 60Hz input and always outputs ~120V 60Hz. (I have not yet tested with 100V (Japan) input yet - hopefully I can update this review later once I have a different bench power supply.)NOTE ON LOAD:Load is listed as 350W max on the device (which I have NOT tested loads yet either). This device should be fine for travel with small devices like electric toothbrushes, beard trimmers, etc. but make sure you know how much load (Watts) your electrical device will draw BEFORE you leave for vacation. **This will likely NOT power a hair dryer or curling iron/hair straightener.**>>DOACE 350W Voltage Converter, Ai 220V to 110V Converter and 50Hz to 60Hz Transformer, Power Converter Adapter Combo US to AU, UK, European Travel Plug Adapter for Hair Straightener Laptop Cell Phone<<LINK: https://www.amazon.com/dp/B0DS71M1MF?ref=ppx_yo2ov_dt_b_fed_asin_title&th=15 out of 5 Stars

Purchased the item two months before traveling abroad. When I arrived in the foreign country, the item did not work. The thirty (30) day return window has closed and, therefore, I remain with a defective product. (Rating should be no stars).