There ara many features ,not implemented in 245 series, and there are compatible :
- sunset - sunrise --> widget , IQ App, is not valid. You can configure field in watch face or field of activity , but i can see it in other place.
- Lactate Threshold , gps - hr are pressente.
- Elevation Profile - based in gps altitud, like olders watches 310xt
@Garmin , please consider activate .