Hmm, $30 Xiaomi wireless Bluetooth earpods have pretty good battery life and very decent audio quality. I don't know about waterproofness, but the low end range of wireless earphones has improved significantly in the last few years.
I meant more battery quality than battery life, they usually include a small supercapacitor that tends to fail abruptly. I've had ones that lasted for years and others failing after a couple of months.