have bought these earphones/earphones from this range, several times and they never disappoint, they're a lot cheaper than other earphones but if looked after last long enough. you'll probably end up needing to buy another pair maybe in afew months or like a year but at the price then it's well worth it for the quality of sound you get.
ups: really good sound and bass, VERY low sound leakage so you can turn it up and not have everyone around you listening to it aswell. alright noise cancellation too, so you don't struggle to hear your music if you're in a busy area.
can be separated from the sony connector and used with the normal phono connector.
downs: one pair varies from the last, so don't expect the exact same quality, one pair might be alright sound and last forever and the next you buy be great sound but only last a week (but like i said at the price, just buy two and always have a spare ready, it's usually one earphone that stops working and they extention cables fine so you end up with alot of extra cables lying around)
it would have got FIVE STAR's but...because of the previous point and the fact that they start of sounding not very bass'y and poor sound but after 2weeks or so of listening then the sound quality improves massively.
so if you do buy these don't listen with them and right away think they're terrible try wearing them in for a couple of weeks and you'll soon realise they're worth more than what they cost.