Singapore-based design brand Gray International has introduced its Advent iPhone cases, specially crafted for Apple’s iPhone 7 and iPhone 7 Plus.

The Advent case is manufactured out of aerospace-worthy Grade 5 titanium, and is as visually striking as tough; it’s not only incredibly durable, it also offers a sleek aesthetic in a number of finishes.

Gray International will produce 500 examples of the Advent case. Each will come with a laser-engraved serial number. Finish options include Aurora anodized, Satin, Stealth, or 24K Gold. The case also comes with a black anodized display case, just in case the owner of the Advent wants to protect their investment.

The Advent cases cost $495, with the exception of the 34K Gold option, which comes with a $1,150 price tag.

Gray International has also released an aerospace-grade titanium pen that it has called Shard. The pen finishes match the case options.