Voice dialing through Bluetooth headsets worked well. Battery Life The Sony Ericsson W580i comes with a Sony Ericsson standard rechargeable Li-Polymer battery that’s 930mAh in capacity. The battery is ...

Namely the Sony ... Battery life is good for up to 12 hours at a time, rechargeable through the USB-C port, which you'll also find on the left earcup. Yes, it's a busy side of this headset!