What is the "shelf-life" of a typical flex chip purchased from DT?

[anon3825968]

Shelf life of implants

I have 2 xem, a flex nt, a vivokey, and a xm1+ I got last year that I don’t plan on installing till the 2nd half of this year. What is the shelf life on these? How long can I hold on to them and still install them? All are completely unopened and still sealed.