We tested the headset on the Nokia 6820, the Motorola V600, and the Sony Ericsson T616. While callers said the outgoing sound quality was superb, we thought that incoming sound quality to be a bit metallic. Nokia promises 4 hours of talk time and 4.2 days on standby. In our tests, we managed 4.5 days of standby time. For more Bluetooth headsets, check out our Bluetooth headset roundup.