I always fall asleep listening to audiobooks which used to mean getting tangled up between various models of ipods and earbuds. After my fourth ipod hard drive crash and the hundredth pair of ear buds shorted out, I finally decided to get with new technology and utilize my phone's expandable memory (plus Audible App) and bluetooth to listen to my books. Searching for a pair of headphones that had a decent battery life, low profile, AND affordable was a challenge, and I'm so glad that I found these from Philips. I usually get 8+ hours of listening time in and recharge time is super fast. They are also super comfortable and don't dig into my ears nor fall out easily when I toss and turn during sleep. Highly recommend, and I will be purchasing a second pair.