3v (2x AA batteries).
Display is 8 digits, green vacuum fluorescent.
4 functions, %.
Integrated circuit: NEC uPD941C.
78 x 136 x 26 mm. (3" x 5.4" x 1").
Made in Japan.
The label on the rear says "Supplied exclusively to W.H. Smith by Decimo".
W.H. Smith is a British chain of newsagent, book, stationery, and music stores.
The electronics inside, showing the vacuum-fluorescent display (VFD) in a single tube on the left, the edge of the keyboard in the middle, and the NEC uPD941C calculator chip on the right.
Vintage British Calculators
© Text & photographs copyright Nigel Tout 2000-2020 except where noted otherwise.