We've seen a bit from BLU Products recently, and it has been a very interesting manufacturer. The aim of the company has been to build solid Android smartphones at very inexpensive prices. The newest addition to the BLU lineup is the Dash 4.5, which has started shipping, and costs just $139 unlocked.
At that price, it shouldn't be a surprise that the BLU Dash is running a MediaTek MT6589M 1.2 GHz Quad-Core chipset with a PowerVR Series SGX544 GPU. The Dash also has a 4.5" display, but again you can see the cost cutting, because it has just a 480 x 854 resolution. To round out the spec sheet, the Dash has 512MB of RAM, 4GB of storage, a 5MP rear camera, a VGA front camera, and support for HSPA+ 21Mbps.
The best part of the spec sheet is that the device is running stock Android 4.2 Jelly Bean, and specifically states that there has been no customization. And, the other impressive bit is that the phone is Dual-SIM compatible, and Dual Active, so you can have active calls on both SIMs at the same time.
Obviously, BLU doesn't make devices for spec nerds, but if you're looking for a solid device at a very low unlocked cost, this is definitely an interesting entry.