diff --git a/Hardware/Hellen/Hellen121VAG.md b/Hardware/Hellen/Hellen121VAG.md
index 30fb0705..b77788e1 100644
--- a/Hardware/Hellen/Hellen121VAG.md
+++ b/Hardware/Hellen/Hellen121VAG.md
@@ -7,6 +7,14 @@ Hellen Plug&Play for ME7 VAG vehicles
 Status: landed in USA!
 
 
+## Hardware features
+
+* knock detection module with headphone jack
+* build-in WBO - WARNING 4.2 software not ready while we believe that hardware is universal (footprint, stm32f042 not in stock at JLC)
+* Baro sensor LPS25HB (footprint, not populated by JLC)
+
+
+
 [Hellen121vag interactive pinout](https://rusefi.com/docs/pinouts/hellen/hellen121vag/)
 
 [Connector Vehicle Pinout reference table](https://docs.google.com/spreadsheets/d/1H0cZPAJFbpprgSu1Y8BiAYzXbqddvIn-Hhod4QCVQwk)