diff --git a/ToDo.md b/ToDo.md
index 2ddf98c..1432aac 100644
--- a/ToDo.md
+++ b/ToDo.md
@@ -4,7 +4,8 @@
 
 - [ ] Choose display(s)
   - Main display: Color, 62.985mmx51.286mm (3.2"): [3.2" TFT Display SPI no touch on Aliexpress](https://de.aliexpress.com/item/33015586094.html)
-  - Seconday display: Monochrome (green?), 28.707x13.94mm (1.26") [OLED I2C](https://de.aliexpress.com/item/1005005473564682.html)
+  - Secondary displays: Monochrome (green?), 28.707x13.94mm (1.26") ~[OLED I2C](https://de.aliexpress.com/item/1005005473564682.html)~ [OLED SPI 7-Pin](https://de.aliexpress.com/item/1005003753680706.html)
+  - Tertiary display: 73x21mm (2.99")
 - [ ] which uC?
      - [ ] what kind of SW?
 - [ ] battery + loading circuit