Wireless Performance and Battery Life

The Corsair HS70 Bluetooth uses the Bluetooth 5.0 wireless connection, which supports SBC and AAC Bluetooth codecs. The Bluetooth connection worked as expected—it was perfectly stable within 10 meters. In case you were wondering, connecting the headset to multiple mobile devices at once isn't possible. The Bluetooth connection is reserved for the device it's connected to. If you want to switch it to a different Bluetooth device, you first need to terminate the existing connection.

Battery life is quite impressive, coming in at around 30 hours, just like Corsair claims. Battery life stops being a relevant factor if connecting the HS70 Bluetooth to your PC by using its USB connection while simultaneously having it connected to your phone—the USB connection keeps the battery topped up.