In the crowded world of wearable fitness tracking devices, some designs are looking beyond functionality to aesthetics. Sonny Vu, CEO of Misfit Wearables, showed CNBC's "Squawk on the Street" viewers his latest device, a small metal disk called Shine, which attaches anywhere and links with a smartphone app to monitor the user's activity.
"We wanted to make something that people can wear, anywhere, on their body, (during) any occasion," he said. "Not make a piece of plastic that you'd have to fix on your body, but something that's elegant."
Vu co-founded Misfit in 2011 with former Apple CEO John Sculley. Launched for the iPhone last August and Android devices later that year, Shine is waterproof and clasps onto anything from belts to shirt cuffs. Additional hardware available from Misfit lets users wear the disk like a wristwatch.
"We wanted to make products wearable, and maybe some products that are not wearable that would serve us rather than us serving technology," Vu said.