In today's product review, I'll show you an international power converter with three features in one.

The Travelon 3-in-1 power converter/adapter combines a regular international plug adapter with a power step down transformer and a USB charger.

With these three features in one charger, you can plug your regular US appliance into almost any outlet in the world. This includes Western Europe, the UK, Japan, China and Australia.

To accomplish this, the prongs on the rear of the device rotate to the V-shape required for Australia. For Western Europe you can attach the included round 2-prong adapter, and for the UK and Singapore you attach a 3-prong adapter onto the back of the device. I've included photos of each plug in the gallery at the bottom of this post.

The entire adapter fits together nicely. When you are not using it, you simply slide the European adapter into the top of the UK adapter, and connect them all together. The total weight of the unit, with all the plug adapters is just 5 ounces.

The build quality of the 3-in-1 converter/adapter is quite good, the adapters lock in place tightly, my only minor complaint is that the 2 locking clips on the top of the unit, (which hold the UK plug adapter) do not always stay in place, but this does not hinder the functionality of the device as the plug itself has a separate set of clips with a "release" button.

If you use the 3-in-1 adapter in a country with voltages higher than the 110 Volts used in the US, the device simply reduces the mains voltage. This "step-down" conversion can power up to 1875 watts. Unlike many step-down adapters, the Travelon 3-in-1 also features a built in overheat protection circuit which should prevent damage to your products, plus it should prevent tripping a breaker and plunging an entire floor of hotel rooms into darkness.

The third feature in the 3-in-1 adapter, is a USB power charger. This single USB port on the top of the device works on 100-240 Volts, and combined with the international plug adapter, you should be able to charge your USB devices (like the iPod or Blackberry) anywhere in the world.

The adapter even has a built in surge protector, which in my opinion is a "must have" if you plan to power any high-tech gadgets in a country with less than stellar public utilities.

The Travelon 3-in-1 power converter/adapter has a suggested retail price of $69.99, but a quick search shows several retailers selling the product for around $45.

The Travelon 3-in-1 converter/adapter is a great addition to your gadget arsenal, and as always, I am impressed with any gadget that can turn 3 products into one. The price is a little steep, but there really isn't anything like it on the market. I've reviewed adapters with a built in USB charger before, but this is the first one I have seen that is compatible with all the various voltages and plugs in the world.

Gallery: Travelon 3-in-1 power adapter/converter

Filed under: Gadling Gear Review