NanoVNA-H4 for sale. Bought from R&L Electronics 4/2020. Used a couple of times back then and not since. Contains all original cables/connectors/cal loads/etc. In original, nice box. Just powered it up and charged the battery and it seems to be working fine. Version v.0.5.0. I haven't followed this device on-line, so don't know what the current version is. No manual or instructions were included, but lots of info on this group and on YouTube. $50 including shipping in US. PayPal preferred. If you need more pix or have questions, just ask.
Tnx es73,
Randy, KS4L