Wearable devices make up this year's hottest tech niche, and gadget makers that aren't already in the game have been scrambling to develop and sell their own, according to one tech expert.
"Every year you have to have … one hot category that everybody wants to get into. This year it's definitely wearable stuff," said CNET Senior Editor Dan Ackerman at the 2014 Consumer Electronics Show in Las Vegas.
Among health-monitoring wearable gadgets, the FuelBand and the FitBit have gained popularity, but now tech giants like LG and Sony and smaller companies like Pebble are in the clip-on fitness tracking game, Ackerman said at the show.
Sony's Core fitness tracker, introduced at CES, should be on sale this spring, according to the company. And LG's new Lifeband Touch, also at CES, is expected to reach the market later this year.
Smart TVs and devices enabling Web video streaming to more traditional TV sets as well as connected and self-driving cars were also among the highlights at CES this week.
—By CNBC's Althea Chang