Red rock is one of Lewis Wu’s go-to spots to run when he’s here in Las Vegas. He lives in Irvine, but is in Vegas for the Consumer Electronics Show to show off what he’s got on his wrist. Before he started this run – he put it on.

“This is our apex 46 millimeter,” he said.

It’s a GPS-enabled watch, but Wu says this latest multi-sport watch from Coros can do something no other watch on the market can do.

"Full GPS mode it lasts for 35 hours.”

The CEO of Coros says most other GPS watches on the market now run out of juice after just 13 to 20 hours. So yes, if you have the urge to run and run and run, this watch will keep going.

“I don’t think I can run 35 hours nonstop,” says Wu.

But an ultra runner likely could, or could at least get really close. An ultra runner did just finish a 24-hour run where she set a world record and still had 32 percent power left in her Coros watch.

Wu is attempting to run an ultra race in April. He’s going for 50 miles. The watch can help him keep track of his training everything from his heart rate to stamina.

“We call it 'body battery,'" he says. "So basically, showing you how much energy you still have left in your body. How far you should run.”

It’ll even tell you when you need to take a break. It’s all synced with the Coros app on his phone.

Wu will be running as much as possible between now and April. And he’ll be doing it in Orange County, where Coros is now based.

“Initially it was in the East Coast in the Virginia area. So by the time I joined the company, we decided to move the company to Southern California,” he said.

Because Southern California is home to the the types of places he says this gear is meant to be used in. And while he may be not be able to outlast the watch . . .

“The watch will always win,” he says.

He says he hopes to have a strong finish in his upcoming ultra run.