calculator volume of a check calculator

With the cover removed, showing the main circuit board with the display daughter board. The display is amber gas-discharge.
The display daughter board has been removed to reveal the integrated circuits.
The main ones are from General Instruments Microeletronics.

12 digits check desktop calculators
Battery, solar, two way power
Plastic key
Mark-up %
Extra-large display
Metal faceplate

Glass Key
Certificate: RoHS, CE
Service: Customized logo, color, brand name
Package: Color box with customized logo
Size: 144*180*34 mm
Packing specifications:
Inner carton:  20 pieces
Outer carton:  80 pieces
Size: 46*40.2*68 cm
Net weight : 16.00  kg
Gross weight:  18.50 kg