4.5 I think its water proof??? Unrelated | 15/08/2012 | See all Unrelated's reviews (1) Had this for a long time but only used it for about 2 weeks before I lost it. I recently found it attached to a buttoned up shirt pocket, I presumed it wouldn't work due to it being washed multiple times and even dry cleaned at least twice. I thought I might as well try and get my stuff off it and after plugging it into my computer found that this awesome little gadget appears to be waterproof. It would have gotten 5 stars but it seems a bit to small and therefore easily lost.