Prinztronic X15

9v (PP3).

Display is 8 digits, red LED

4 functions, %.

Integrated Circuit - GI C-683  (date coded 7610).

67 x 131 x 23 mm (2.6" x 5.2" x 0.9").

Made in Hong Kong.

Board marked "Radofin".
Case rear marked "Property of Radofin - Model 1500".

Another version of the Prinztronic X15.

Prinztronic models