From the obelisk

The double anti-reflective sapphire crystal protects the dial

making them the perfect choice for wear while surfing

this Swiss-made timepiece is as bold underwater as it is above it

U-Boat Darkmoon Oil Immersion Men’s Blue Watch Size B_13 From the obeliskU Boat Darkmoon Blue IPB Ref. 9020 C introduces the oil immersion concept in a refined 41. 5mm format, delivering a new visual dimension where depth, contrast, and minimalist design take centre stage. Powered by the Swiss Ronda 712. 3 quartz movement, lubricated in an oil bath, this model ensures precise and reliable timekeeping with a pure hours and minutes display. A visible air bubble compensates for temperature variations, reinforcing the