Following weeks of leaks, teases, and speculation, OnePlus has lifted the lid on its third smartphone, its second of the year, VentureBeat reports.

The OnePlus X comes three months after the China-based company unveiled the OnePlus 2, its follow-up flagship after the introduction of its inaugural OnePlus One in 2014.

At a launch event in central London, OnePlus is unveiling two variants of the OnePlus X. The main incarnation is the “OnePlus X Onyx,” which runs on Oxygen OS (Android 5.1.1), and sports a 5″ AMOLED full HD display and black glass backplate with a metal bezel. It weighs in at 4.86oz (138g), making it the company’s lightest device yet. In terms of overall size, it measures 140mm x 69mm x 6.9mm, which also makes it the smallest OnePlus device yet.

While it only comes with 16GB of onboard storage, it does come with two SIM card slots — one of which doubles as a microSD slot that can expand the storage up to 128GB. This is the first OnePlus phone to feature expandable storage.

OnePlus is also rolling out a limited edition ceramic version which is pretty much the same as the onyx version in terms of features and specs, but this one was “crafted in a process totaling 25 days,” the company said. “Each individual OnePlus X backplate undergoes three meticulous methods of polishing before it is flawless enough for use.” The device is touted as scratch-resistant (as most good phones should be). The OnePlus X Ceramic is also slightly heavier, weighing in at 5.64oz (160g).