Sony MDR-AS600BT Sweat & Water Resistant Bluetooth® Sports Earphones. Keep listening whatever the weather with the MDR-AS600BT in-ear Bluetooth headphones. Arc supports, coupled with the band, keep them securely in place so that you can listen slip-free for hours on the go, whether you’re running, cycling or rowing. Connect wirelessly to selected smartphones with One-touch listening via NFC. And buy this Sony MDR-AS600BT Sweat & Water Resistant Bluetooth® Sports Earphones with 8.5 hrs battery life Now £60.00.