We offer Accoson Greenlight 300 Sphygmomanometer with Wide Range Velc.0709 Accoson Greenlight 300 Sphygmomanometer with Wide Range Velcro Cuff The Greenlight 300 is a new type of manual sphygmomanometer that has been developed to provide a reliable and accurate alternative to the mercury sphygmomanometer, the current gold standard in blood pressure measurement. This is achieved by using silicon chip technology to replace the traditional mercury column with an electronic pressure detection system. This version comes fitted with the Accoson Wide Range Velcro Cuff.