Gresso's gone back to black. The company's latest luxury smartphone, the Radical Black R1, is a limited edition series with only 100 units being made. Gresso's understated design shows that sometimes, less is definitely more. The Android 4.1.2 (Jelly Bean) smartphone chassis is made from sleek aerospace-grade black titanium with an white titanium inlet of the company's logo. Rounding out the expensive frame is a 4.5-inch 940 x 540 display, a 1.2-GHz quad-core processor, 36GB of storage and a pair of SIM card slots.