The TUDOR Black Bay 58 Blue 39mm (Ref. M79030B-0001) captures the authentic proportions of TUDOR’s groundbreaking 1958 dive watch whilst delivering contemporary performance through the Manufacture Calibre MT5402. The 39mm case faithfully recreates vintage dimensions that many find superior to oversized modern dive watches, offering genuine tool watch heritage in wearable proportions.
At 39mm with 11.9mm thickness, this provides substantial presence without the bulk that makes larger dive watches cumbersome for daily wear. The deep blue dial appears almost black in low light whilst revealing rich navy tones in sunlight, creating visual interest throughout the day. The distinctive snowflake hands maximise luminescent surface area within their angular geometry for enhanced underwater visibility.
The Manufacture Calibre MT5402 delivers COSC chronometer certification with 70-hour power reserve, fundamentally changing the ownership experience compared to standard 42-hour movements. The silicon hairspring provides magnetic resistance essential for modern environments, whilst the weekend-proof power reserve accommodates irregular wearing patterns.
The riveted steel bracelet recreates 1950s construction methods with modern security improvements including solid end links and folding clasp with safety catch. The blue colour scheme connects to TUDOR’s heritage supplying dive watches to Marine Nationale and other military diving units.
This Black Bay 58 Blue suits buyers who want authentic vintage proportions with contemporary reliability. The 39mm sizing makes professional dive watch capability accessible to those who find modern oversized watches unwearable, whilst the blue dial provides sophisticated colour that transitions seamlessly between diving adventures and formal occasions. It demonstrates that tool watches can honour heritage whilst embracing practical modern proportions.
