Unserviceable laptop and cellphone batteries are terrible and apple is by far the biggest offender.
disclaimer: typed from a macbook :(
I have used them 5 days a week, for ~2 hours a day for almost the entirety of those 7 years, I charge them approximately once per month.
They cost £400 at the time and have been by far the best consumer electronic investment I have ever made. When the battery becomes unusable I'll find a replacement and fit it my self, but I have no plans to replace them until they are deader than dead.
I don't care much for "fashion" and they already have more features than I need (I use the physical switch to toggle off the NFC because I never need to use it), they do high enough quality audio (AAC/AptX) for streaming 320/16/44.1 and the battery life is better than any other battery powered device I own (barring the TV remote) even after all this time.
Honestly if you regularly write code in an open office like I suspect many here do; a serious, professional pair of headphones are one of the best things you can get. Wireless with active noise cancelling that are comfortable and have a robust battery life. The Sony model mentioned by another poster appear to be quite nice as well.
Smart management would make sure these things are available to their employees no questions asked.
My experience with this made me laugh. I had a company that had the right idea when they moved everyone to open floor plans; buy them "premium" headphones. The headphones they bought were expensive (valued around $150 new), but were utter garbage. I can't tell the difference audio between $5 earbuds, and $100 earbuds ... but I can tell when these beats headphones have the sizing for children. Nearly everyone ended up selling theirs and letting them collect dust.
I convinced my manager to get us all Bose headphones.
Several people from other teams (all of which had private offices) raised a stink to the CEO, who refused to approve the purchase, leaving my boss to foot the bill by himself.