The rz1715 - Their low-end Mobile Media Companion, the rz1715 only has a 203MHz processor, 32MB of RAM, a 3.5-inch LCD screen, an SD expansion card slot, but no WiFi or Bluetooth.
The rx3700 - Another Mobile Media Companion, the rx3700 has the same media and universal remote software as the rx3100, a 400MHz processbuilt-in WiFi and Bluetooth, a 3.5-inch LCD screen, and an SD expansion card slot, but also has a built-in 1.2 megapixel digital camera.
The rx3100 - They're dubbing the rx3100 a "Mobile Media Companion", and it comes with 64MB of RAM, built-in 802.11b WiFi and Bluetooth, a 3.5-inch LCD screen, an SD expansion card slot, and software for wirelessly browsing your music, photo, and video collection from anywhere in your home and so you can use the rx3100 as a universal remote control.
However, the dock has a lot going for it, on top of its general rigidity: extra ports (including HDMI and USB 3.0), an SD card expansion slot, a 500GB hard drive to complement the fast solid state drive within the tablet itself, and a second battery to increase running time.
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It's powered by a 1GHz AMLogic ARM processor, has a Mali-400 GPU and comes with 512MB of RAM, 4GB of internal storage, plus an SD card slot for future expansion.
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Otherwise, the specs aren't too far off its predecessor, including the same 8GB, 16GB, and 32GB options, a microSD card slot for further expansion, a built-in microphone and FM radio, an RSS reader (which must be synced up with your PC).
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We'll hope for at least MP3 support so your kids can start sticking it to the man, and luckily there is an SD card slot for cheap memory expansion.
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And several companies had concept and prototype devices that envisioned digital cameras and global positioning system expansion devices that would fit into the SD card slot.
While the smartphone maker argues that the phone does offer an expansion option in the form of a microSD card slot (up to 64GB, no less), some apps still seem to prefer to reside on built-in storage over anything removable -- Amazon's Cloud Player comes to mind.
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