These earbuds are amazing, ANC, particularly for wind noise makes for a very detailed bass rich sound, which is not overpowering. Battery life is pretty much as described which is impressive for such a small unit, though I would always have ANC on, as without it, the sound is a bit thin for my taste. The proximity sensor works 100% of the time, a vast improvement on my last colourbuds for which that feature was unreliable, so I didn't use it. These comfobuds will now be my earbud of choice. 1 more customer service was very good too -my first set was faulty and they replaced them quickly (I suspect this doesn't happen with Amazon, who will just refund and expect you to purchase another item - not ideal if a Black Friday deal is no longer available)