The Tudor Heritage Black Bay Black 'Dark' made its debut at BaselWorld in 2016. Its sleek stainless steel case is 41mm in diameter and coated in black PVD. This model, like the others released that year, boasts an in-house movement. Until 2018, it also came with a fabric strap. But with the introduction of the 79230DK-0007, that extra strap was no longer included.