It was manufactured in Japan and is made by Canon. The device has not been modified and is in its original state.
Canon LS-3 Solar Vintage Calculator Case Electronic Handheld Tested Working
Vintage Canon LS-3 Solar Calculator Electronic Handheld NOS W/ OBI Works in box Open Box, new, looks unused, in orignal box w/ case, manual, warranty info and OBI (Obi is common on Japanese products when sold new