OEM Original Blackberry 3.5mm Mono Handsfree Headset Earphone for T-Mobile BlackBerry Curve 8520 Ergonomic earpiece with soft comfort ring provides comfortable fit even over extended periods Brand new high quality OEM Blackberry and hands-free headset for Blackberry Includes a Send / End key on the mic to allow you to receive and end calls w the push of a button on Great sound quality and bass response Excellent sound quality