MTDelta Open Heart Steel Watch

The Watch

Maison Du Temps is a French watchmaking brand launched in 2021, crafting elegant, chic timepieces with a truly distinctive style. The MTDelta Open Heart Steel Watch was designed with the utmost care to meet the expectations of the most discerning customers. It features an octagonal case with a 40 mm diameter, crafted in 316L stainless steel with a charming vertically brushed finish on the surfaces and a polished finish on the sides. It houses a flat anti-reflective sapphire crystal that effectively protects the dial from scratches. On the right side of the case, the knurled crown is positioned at 3 o'clock. Screw-down, it handles time and minute adjustments. As for the screw-down case back, it features a sapphire crystal window that lets you admire the movement's inner workings. This case back gives the watch a water resistance of 10 ATM.

The Dial

Clean and refined, the dial of this watch is a stunning study in minimalist elegance. It features a matte green base accented by a very slim minute track running along the perimeter. That track frames applied faceted baton indices marking the hours in a silver tone, with the added benefit of luminescent treatment for optimal legibility in low-light conditions. For a touch of extra elegance, 12 o'clock is graced by the brand's six-petal flower logo. The hour and minute hands take a sword shape and share the same luminous treatment as the indices for perfect harmony. Between 4 and 5 o'clock, a sub-dial displays the small seconds. This graduated ring meets the open-heart aperture situated between 6 and 8 o'clock, proudly revealing the heart of the watch and its movement so you can admire it while reading the time. The brand's signature sits just below 12 o'clock.

The Movement

Maison Du Temps has chosen a Japanese-made automatic movement for this model. Featuring 21 jewels, the Miyota 82S5 caliber delivers a 42-hour power reserve and beats at a frequency of 21,600 vibrations per hour, reliably driving all central functions.

The Bracelet

This watch is fitted with a sleek 316L stainless steel bracelet featuring a series of links with an alternating polished and satin finish, lending it a distinctly luxurious look. The bracelet measures 20 mm in width at the lug end and fastens with a deployment clasp.

Water Resistance

With water resistance up to 100 meters - that's 10 ATM in watchmaking terms - this proud-looking timepiece transitions effortlessly from black-tie events to aquatic adventures. Feel free to wear it in the shower, the bath, or even during an energetic swim session. That said, our team of watch experts wants to be clear: this model is not designed for scuba diving (freediving or tank diving) or high-pressure cleaning equipment. Remember: showers, baths, and swimming only - and never operate the pushers or crown while submerged.