Delivery giant FedEx (nyse: FDX - news - people ) pioneered the use of the technology several years ago, "We started looking at Bluetooth when there were really very few if any manufacturers in the U.S. that manufactured Bluetooth chipsets and radios, " says Ken Pasley, director of wireless systems development for FedEx Services.

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This analog Android packs a Froyo-powered 806MHz processor, 512MB of RAM, front and rear 5 megapixel and 0.3 megapixel cameras, respectively, a 3.5 inch 320 x 480 touchscreen, and a whole mess of standard GPS, Bluetooth, and 3G radios.

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Whereas the original prototype had a thin, flimsy shell, the Virta 2's gone downright rugged, ditching the iPhone chrome for a more durable gunmetal frame, and there's a full compliment of sensors (compass, accelerometer, ambient light and proximity) alongside quad-band radios, WiFi, Bluetooth and a pair of cameras for your video chat testing needs.

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Inside, the device is home to all the usual radios and sensors, including Bluetooth 3.0, a gyroscope, e-compass, aGPS, an ambient light sensor and a G-sensor, with either 16GB or 32GB of internal storage.

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The ML910 is actually a followup to the ML900 (pictured) features a 13.3-inch widescreen display, 1.66GHz Core Duo processor, 128MB of ATI Radeon X1400 graphics, and choice of radios including integrated WiFi, Bluetooth, GPS, and WWAN.

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As for radios, you get the usual WiFi, GPS and Bluetooth 4.0, but there's only WCDMA 2100 for 3G.

ENGADGET

For sensors expected to last months or a year on batteries, though, such as those used in security applications like window openings and motion detection, Bluetooth Smart is developing into a competitor to other low-power radios.

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Cramming multiple radios, using multiple technologies, plus Wi-Fi, plus Bluetooth, and GPS requires top-notch engineers who understand antennas, filters, and the other components necessary to build a product that will work well and satisfy the general public.

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