Wearable tech at Mobile World Congress (pictures)

Samsung had no fewer than three wearables debut at Mobile World Congress, and the most interesting was the Gear Fit: from its curved AMOLED display to its Fitbit-like wristband design, the Gear Fit falls right in between smartwatches like fitness bands. It's less advanced than the new Gear 2, but it's still feature-packed: there's a heart rate monitor, message notifications, and remote music controls are onboard. It arrives in April. Read our hands-on take on the Gear Fit.

The original Samsung Galaxy Gear came out just last fall, but there's already a Gear 2 arriving April 11. The new version is thinner, lighter, has a better dual-core processor, comes with a heart rate monitor, can store and play music offline, acts as an IR TV remote, and comes with a whole new Tizen operating system under the hood instead of being Android-based. But it's not alone: now there's the slimmer Gear Fit and the camera-free Gear 2 Neo, too. Read our hands-on impressions of the Gear 2.

Take the Gear 2, make it a little thinner, a little more plastic, and remove the camera. Now you have the Gear 2 Neo, another variant on Samsung's new Gear 2 watch. It's got the same screen, processor, storage and other specs as the Gear 2, but with what we assume will be a lower price. Read our hands-on with the Gear 2 Neo.

Combine a fitness tracker and a smartwatch...sound familiar? Everyone's doing it. Huawei's wearable tech device at MWC has a pop-out module that fits in a band, and can be used to track your activity or to monitor phone calls. But wait, this is also a Bluetooth headset! Stick it in your ear, make a call, then stick it back in your band. Maybe give it a good wipe, too. Read our hands-on impressions.

Sony's new SmartBand looks like a spin on fitness bands like those from Jawbone and Fitbit, with a twist: Sony's Life Log software rides along sidesaddle on your phone to extend beyond fitness tracking and keep track of everything else in your life, too...using the photos you've taken, and apps like Facebook. It arrives in March. Read our impressions here.

What is a smart glove? It's part of Fujitsu's next-wave vision for the future of factories and other industrial workplaces. The glove, targeted for 2015, lets you just point at what you're looking at, while paired augmented-reality glasses show you what you need to actually be doing instead. Read more here, and watch a video, too.

What's $99, coming in April, and measures your heart rate? The Mio Link, a simple, screen-free heart-rate monitor that wirelessly syncs and has a pulsating LED. Read more here.

A wristband that's just made for storing passwords, PIN codes, and maybe even open password-protected car doors. A recipe for disaster, or genius? The $79 Bionym Nymi prototype was seen at MWC. Read more about the Nymi here.

One of many smartglasses companies at CES, Lumus has a design that fuses traditional glasses with a side-mounted heads-up display projector. A new partnership with EyeSight at Mobile World Congress brings gesture recognition as part of the baked-in software: a clever idea for a pair of glasses, and a great way to look really weird at parties. Read more here.

Water-resistant, rugged, $149.99: well, Blueant's Bluetooth HD Sportbuds are wearable, so they're in this wearable roundup. Read our hands-on.

Advanced noise-cancelling, voice commands, and NFC for quick smartphone pairing might make the $129.99 Plantronics Voyage Edge a better riff on the Bluetooth audio headset. Will it be able to beat the Jawbone Era? Read our hands-on impressions of the Voyage Edge.

Sony's SmartWatch 2 is already available, but it couldn't do navigation. Now, thanks to Garmin's Xperia Edition app for Sony smartphones, the SmartWatch 2 can get maps beamed to it. Read more about the navigation addition here.