National Geographic and Cellular Abroad have joined forces to introduce a new option for those who need to stay in contact while traveling the world. The National Geographic Travel Phone includes an unlocked Motorola handset, a charger that comes complete with international outlet adapters, and a Nat Geo SIM Card, all for just $99. A second phone, dubbed the National Geographic Duet, is also available and includes all of the above, plus dual SIM Card slots, a larger screen, upgraded performance, and additional features for $179.

The new pay-as-you-go service works in more than 150 countries across Europe, Asia, and Africa, and includes free incoming calls in more than 70 countries, plus 30 minutes of credit for outgoing calls in most countries as well. The service comes complete with two phone numbers, one based in the U.S. and the other the U.K., and both are always active and do not require a monthly fee. The U.S. based number also works for text messages and call-forwarding too.

For more information on both handsets and the Cellular Abroad service check out this page. You'll not only find a list of countries in which the phones will work, you'll get a breakdown on the costs and services, and a handy calculator to help you determine just how much you'll pay when calling from one country to another.

For frequent travelers, this looks like a great option for staying in touch while abroad. The list of countries where these phones work is quite impressive, which can save you time and hassle when looking for SIM Cards after you arrive at your destination.

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