You’d be forgiven for expecting M to have a rugged, moody interior to match its brawny exterior—which includes its own seaplane. The interior, however, is a pleasantly surprising contradiction. It’s delicate and filled with special details that make it clear the vessel has been carefully customized with an eye for detail. After all, the design of explorer yachts tend to lean one of two ways: clean and pared-back, or cozy and comfortable. For this yacht though, the owner wanted something fresh and design-oriented.

The owner also leaned in hard when it came to upgrades and special touches that added $3 million to the final price. The crane on the aft deck, for instance, is capable of hoisting 7.5 tons, significantly more than the other yachts in Sanlorenzo’s EXP series. At the other extreme, the owner’s obsession with creating a seamless audio visual system included a special sound system integrated into the overheads. No ugly speakers or tell-tale wires—and all the controls panels are discreetly stowed away in little ‘nerve center’ closets on each deck.

M was one of the hotly anticipated yachts at the Palm Beach International Boat Show in March and last week won a World Superyacht Award. Since introducing the EXP line to the market almost 10 years ago, Sanlorenzo modified the series from its original 138 feet LOA to a longer, leaner 154 feet. Twelve vessels in the EXP series have been built to date. Most of the yachts have the same basic lines and style, but M has an interesting gray-blue hue that immediately sets its apart. Other more intangible details help distinguish it in a crowded brokerage market, as it’s currently for sale for $35,995,000 through Fraser and TWW Yachts.

Here are 7 features that make M a standout.