It can theoretically record 4k video, but I honestly did not think that the 4k videos looked any better than the 1080p videos, so I kept the setting on 1080p. The sound quality has actually even gotten better and they are is very comfortable to wear for hours of listening. thought these would work. No give no wiggle just a well built solid bench. I bought these for my 9-year old and theyre too small. Recently I have started a climbing program and this variance impacts the ride experience. Very comfortable and I can wear them with my grand daughter when we walk over 2 miles visiting the zoo. For me, the size fit true to the size of any other shoe I wear. However, as other reviews have noted, it doesnt fit larger handlebars. That said, I wear them every day around the house, so this assessment is with considerable wear.