Now our phones hold plenty of music, you might think the portable media player was dead. But these guys want to convince you otherwise.
They've launched the first range of portable media players that boast not only hi-res audio, but 4K video capabilities too. They're called the Seiun Players, and they've shot past their funding goal on Indiegogo.
In case you're not familiar with the term, hi-res audio refers to higher-quality audio codecs that mean your music sounds better than a standard MP3. The full definition is: "Lossless audio that is capable of reproducing the full range of sound from recordings that have been mastered from better-than-CD-quality music sources." For more, check out our guide.
4K video has a resolution that packs four times as many pixels as standard HD.
Combining these two in a media player is no mean feat. The only phone to do so is the Sony Xperia Z5 Premium.
However, a word of warning. While the Seiun Pro players can output video at 4K, they only play it back at 1080p HD. They also don't have a video camera, so you can't capture 4K video yourself.
As well as the Seiun Pro and Pro X – which both have 5.5-inch screens – there's a much smaller Seiun Player with a 1.04-inch screen. So there should be something for everyone.
The Pro X starts at $150 (£99), the Pro is $90 (£59), and the standard Seiun just $30 (£20). Order now, and they'll ship in March.