Thanks for the quick reply, brack11,
There are two sets of numbers on the back cover:
1. Below the barcode: 0420080006
2. Another sticker with: KW-GM3505A080300414
Googling Bluepanther V350 and Menq V350, I did notice that some specs showed with Win CE 4.2 loaded whilst some come with WinCE 5.0. I suspect therefore that there might be a possibility that different WinCE versions may have been loaded at different time of manufacture. This I am hoping gives me the possibility of upgrading to WinCE 5.0.
Anyhow, while looking at the registry, I stumbled on HKEY_LOCAL_MACHINE\OEM with values: Platform "SINCHUN" and OEM "SG-N350G"
Googling SG-N350G also confirmed that my unit appears identical to the images you posted.
What do you think? Regards.