Yellow plastic AM-transistor wrist-radio R-72 Toot-a-Loop, manufactured by Panasonic / Japan ca.1970 Diameter: 15 cm. / 5.9 inch
Works with 1 9v battery, but don’t expect audio quality by modern standards. You should be able to receive AM broadcasts in your region. In very good condition with minor wear from age and use. The cap for the battery cover is slightly widened, see picture.
The Panasonic Toot-A-Loop is represented in the collection of the Museum of Modern Art (MoMA), New York. https://www.moma.org/collection/works/3443?locale=en
and TheMet https://www.metmuseum.org/art/collection/search/491678
