We are proud to present our newest tag: the OSTRA D55 . The OSTRA D55 is a tag with AM and RF technology combined in one tag. The OSTRA D55 can also be ordered with only AM or RF technology. Moreover, the OSTRA D55 AM tag equipped with the patented TED shell and is our first AM tag that comes in a round design. The performance is just as state-of-art as our RF 25 tag.