SP Connect Universal Interface ST5 2018 The magnetic speed visor is

The magnetic speed visor is only compatible with the Smart Helmet 2

If you bought the Stromer second-hand and cannot transfer it to yourself via the QR code

and a large vent on the back

The Seat Post is a robust seatpost for the ST7

SP Connect Universal Interface ST5 2018 The magnetic speed visor isThe SP Connect Universal Interface can be attached to your phone case using the adhesive film. Peel off the protective film from the adhesive pad and press it onto the back of your case. For optimal results, ensure it is positioned as centrally as possible. Compatible: All Stromer models from 2018 onwards (ST3, ST5, ST7) **Not suitable for older Stromer models, ST1 2019, ST1 LCI, and ST2 Belt Scope of delivery: 1x SP Connect Universal Interface