The TV, which has four times the resolution of standard high-def TVs, is available in South Korea, China and the Middle East, according to the Associated Press.
As larger TVs become more popular, television manufacturers have been racing to create sets that are not only bigger, but also sharper. Picture quality tends to decrease as screen size grows, forcing viewers to move farther away in order to get an ideal view.
Although ultra-HD has superior picture quality, the TVs suffer from a lack of content and extremely high prices.
Nonetheless, ultra-HD TVs and OLED (organic light-emitting diode) TVs have been receiving a lot of buzz in recent years and have been heralded as the future of television.
Last week, a report released by NPD Group said interest in 4K TVs "is at a fever pitch as a critical moment is approaching in the market"-that is, the technology is transitioning from early adopters to more mainstream consumers.
Ultra-high-definition TV shipments are expected to total 1.9 million units this year and are projected to rise to 12.7 million units in 2014. NPD said rapidly falling prices, particularly in China, would encourage adoption.
Average prices for 4K are expected to fall below $1,000 in China next year, while the average will remain close to $2,000 in North America, the research firm said.