None of the rubber ear buds fit my ears,
Verified Purchase(What is this?)
This review is from: Sony Walkman Waterproof All-in-One Sports MP3 Player - Black (discontinued by manufacturer) (Wireless Phone Accessory)
Thought I would listen to podcasts during my morning swim but alas no, the supplied ear buds don't fit snug enough to prevent water leaking into the eardrum. This reduces volume in one or both ears to the point where the audio is barely audible.
Microphony is also an issue, if they were supplied with better fitting ear buds then I wouldn't recommend these for people who like to swim freestyle.