The 2015 Blackmagic URSA Mini 4K was the entry model of the URSA Mini shoulder-camera line, pairing a 4K Super 35 sensor with the magnesium body that made the range famous.
It records ProRes and RAW to dual CFast 2.0 cards, offers a global shutter option at 4K, a fold-out 5-inch screen, and standard EF mount with 12G-SDI out.
Its role in the line is the affordable gateway: the same ergonomics as the 4.6K models with a simpler sensor, which kept it popular with event and multicam shooters.
On the used market it sells well below the 4.6K - confirm which sensor a listing has, as sellers regularly write 'URSA Mini' bare. Check CFast slot function (expensive media), fan noise, and included top handle/shoulder kit.