Tudor Black Bay Chrono 39 Bumblebee 2026
Tudor Black Bay Chrono 39 "Bumblebee": A Smaller, Bolder Chronograph
Tudor has unveiled the Black Bay Chrono 39 "Bumblebee," a more compact version of its popular chronograph featuring a striking yellow dial. This marks the first time the Black Bay Chrono has been offered in a 39mm case, addressing long-standing requests for a smaller chronograph option.
Compact Dimensions Without Compromise
The Black Bay Chrono 39 reduces the case size from 41mm to 39mm, with thickness dropping from 14.2mm to 13.1mm and lug-to-lug from 49.9mm to 47mm. These refined proportions promise significantly improved wearing comfort while maintaining the model's sporty 200m water resistance. The smaller case features a new screw-down crown design and more domed caseback, making the flanks appear thinner.
Daring Yellow Dial
Part of Tudor's "Daring Watches" collection alongside the Pink and Flamingo models, the Bumblebee introduces a matte yellow dial with blackened sub-counters, hands, and applied markers. All elements retain white Super-LumiNova for visibility, while the signature Snowflake hour hand provides instant Tudor recognition.
Technical Specifications
| Reference | 79310N |
| Case Size | 39mm x 13.1mm x 47mm lug-to-lug |
| Movement | Calibre MT5813 (COSC-certified) |
| Power Reserve | 70 hours |
| Water Resistance | 200 meters |
| Price | EUR 6,200 / CHF 5,500 |
Proven Movement Platform
The watch uses the Calibre MT5813, based on the Breitling B01 architecture. This COSC-certified automatic chronograph features a column wheel, operates at 4Hz, and offers approximately 70 hours of power reserve. Tudor applies a strict -2/+4 seconds accuracy standard, and the movement includes a silicon balance spring for magnetic resistance.
Bracelet and Wearability
The BB39 Chrono Bumblebee ships on a three-link stainless steel bracelet with polished and satin-brushed finishes. The bracelet features Tudor's T-Fit micro-adjustment system, allowing tool-free adjustments of up to 8mm for optimal fit.
Frequently Asked Questions
Q: Will Tudor offer the 39mm size in other chronograph colors?
A: Tudor has not confirmed additional colorways, though enthusiast demand may drive future releases.
Q: Is the chronograph pusher still screw-down?
A: Yes, the screw-down pushers remain for water resistance.
Q: Is this a limited edition?
A: No, but its "Daring Watches" status may limit availability.
Discover More
Compare with the Black Bay 58 collection or explore our chronograph watch selection.
Source: Monochrome Watches, June 3, 2026