Scenes from Sunday at CES 2014 (pictures)

LAS VEGAS -- International CES 2014, as it's officially called, doesn't actually open for two more days, but there's already plenty to see here in Las Vegas. Take a peek through this slideshow to get a summary of the most interesting tech we saw today.

The biggest event of the day was CES Unveiled, where vendors give press an early look at some of the things they'll be showing off at CES. The first photos in this collection are from that event.

We've seen playful BeeWi robots before and they made another appearance at CES this year. Here are some BeeWi bots that battle each other, controlled by smartphone, at CES Unveiled on Sunday night.

For a summary of the highlights of the day, see our related story: What mattered on Sunday at CES 2014. We'll publish summaries in words and pictures each day of the show, so come back for more all week.

BeeWi also showed off this LED light bulb, which allows owners to change the color using a smartphone.

Chevrolet parked its new 2015 Corvette on the floor at CES Unveiled. We took the car -- and its integrated 720p video recorder and telemetry logger -- for a drive on the track before the show kicked off.

The PrioVR full-body tracking suit can be paired with the Oculus Rift's immersive headset for an unprecedented virtual reality experience. Read more details about the PrioVR suit here.

Wearable tech will be huge at CES this year. Here, a woman shows off some Fitbit fitness trackers at CES Unveiled.

Vanessa Hand Orellana, of CNET en Español fame, gets a look at a DJI drone.

The CNET en Español team checks out DJI drones.

Holi's smart lamp can be controlled via Bluetooth with an iPhone. It changes colors to go along with your music.

Lenovo is demoing a new thinner version of its giant 27-inch tabletop PC, the Horizon.

Here a rep shows off Okidokeys, a line of smart locks from a spinoff project from hotel smart lock provider OpenWays.

Naturally, CES Unveiled featured an ice luge this year.

It's not unheard-of for some attendees to partake in a drink or two.

The floor at CES Unveiled was packed.

Lenovo is revisiting its Yoga hybrid laptop, introducing the Yoga 2, which will be available in 11-inch and 13-inch models. The small version starts at $529, but to get the lower price, you do give up some power compared to the Pro predecessor. You can read more of the details about the Lenovo Yoga 2 here.

The Sphero 2B is the sequel to the Sphero, a basic remote-control sphere that hurls itself around your floor.

Linksys went retro with its newest router. The new Linksys WRT1900AC resembles the design of the good old WRT54G that came out more than a decade ago.

Cobra's pair of rugged Bluetooth speakers include the AirWave Mini (left) and the Box. The Mini sports a splash-resistant exterior, but the Box goes one further -- it's able to survive a 30-minute soak in water. Read more about these two Cobra speakers here.

CNET editor Dan Ackerman tests out a new slimmed-down version of Lenovo's massive 27-inch Horizon tabletop PC.

Lenovo introduced the Flex 14D and Flex 15D, which don't vary much from the original Flex, but instead try to win on price. We have more details on the new Flex laptops here.

The bedazzled Netatmo June has an embedded UV sensor that syncs with a phone app to tell you how much sun is too much.

Jen-Hsun Huang, president and CEO of Nvidia, kicking off the first of the major press conferences at CES 2014. At the event, Nvidia unveiled its new Tegra K1 graphics chip.