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A mother-of-pearl dial gives the Undiné VK64-515A671 its changing, light-catching colour. A polished steel case and white leather strap create a bright finish, with two chronograph counters set into the pearly face.
The Japanese TMI VK64 supplies a 60-minute stopwatch, linked 24-hour indication and date. Quartz timekeeping works alongside a mechanical chronograph mechanism, giving the stopwatch its characteristic operation and reset.
Mother-of-pearl varies naturally, so colour and pattern can differ from the photograph. Super-LumiNova marks the hands and indexes, while 3mm anti-reflective K1 crystal protects the face. A rotating bezel and 200m water-resistance rating add sporty practicality.
The set includes two leather straps and one silicone strap, with quick-release fittings. The case is 39mm across, 13.5mm thick and 48mm lug to lug, with 20mm lugs. Keep leather dry and use the silicone option for water activities. Supplied in a VE Compact box.
| Reference | VK64-515A671 |
|---|---|
| Movement | TMI VK64 mecha-quartz |
| Functions | Time, date, 60-minute chronograph and linked 24-hour indication |
| Case | 316L stainless steel |
| Dimensions | 39mm diameter × 13.5mm thick; 48mm lug to lug |
| Dial | Mother-of-pearl; natural colour and pattern variation |
| Crystal | 3.0mm K1 with anti-reflective coating |
| Bezel | Rotating diver-style bezel |
| Illumination | Super-LumiNova |
| Caseback | Solid, screw-in |
| Water resistance | 200 metres / 20 bar |
| Strap / bracelet | Two genuine leather straps and one silicone strap |
| Lug width | 20mm |
| Presentation / edition | VE Compact box / 3,000 pieces |
Keep the crown fully secured before contact with water, and do not operate the crown or chronograph pushers while the watch is wet. Keep leather straps dry. After swimming with a suitable strap, rinse the watch with fresh water and dry it. Avoid hot tubs and saunas, and follow the manufacturer’s servicing and water-resistance guidance.
We individually inspect watches before dispatch as part of our quality assurance process. Please normally allow 5–7 working days for dispatch, with delivery time additional.
Watch orders use a tracked service. Standard delivery is £4.99 per order, subject to applicable restrictions. See our delivery information for full details.

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Selling fast!
Get yours while you can.