According to this review: http://www.amazon.com/review/R26AWVX4TT9PCT/ref=cm_cr_pr_viewpnt#R26AWVX4TT9PCT
It looks like the Sony MW600 is a similar product: http://www.amazon.com/Sony-1264-5582-MW600-Wireless-Headset/dp/B008NA985C/ref=dp_ob_title_def