Coiled Mono Hands-free Headset Wired Earphone Earbud 3.5mm Single Headphones Earpiece with Microphone for Blackberry Bold 9900 4G - Blackberry Bold 9780 Xenda(TM) brand Coiled headset. Coiled wire design prevents tangles. Ergonomic earpiece with soft comfort ring provides comfortable fit even over extended periods. Brand new high quality mono headset with tangle free coiled wire. Includes a Send / End key on the mic to allow you to receive and end calls w the push of a button on. Excellent sound quality. NOTE: This item is a MONO headset with just ONE earpiece. Easy to use control button, so you can answer, end or mute phone calls (phone must support this).