I have two 1" tv sets in the collection, one Sinclair, and one Panasonic Travelvision.
This youtube video shows a panasonic like the one I have.
1982 Panasonic Travelvision
A bit of information from another site.
Model: Micro Vision MTV1 MTV1A - Sinclair Radionics Ltd.
Modern plastics (no Bakelite or Catalin)
Very small Portable or Pocket Set (Handheld) < 8 inch.
Sinclair MTV1 (MTV1A);
First European pocket b/w TV set, 2" Telefunken CRT;
Multistandard electronic VHF-/UHF tuner with standards CCIR B/C/G/M-(USA)/I-(UK);
Built in accucells + extern 6 V/12 V. Telescopic antenna and UHF dipol.
There were a sticker with FTZ number and "MTV1A" type in german language on MTV1 labeled units - technical differences unknown (probably disconnected ext. antenna in?).
Price first year of sale $400.00