Here’s a rare novelty transistor radio from the seventies, manufactured by Matsushita Electric Industrial company branded National Panasonic.  The design has several unusual features the main one being wearable as a bangle on the wrist although you may look rather odd doing so. Yes, millennials  wearables were alive and kicking in the 1970s.  There’s even a walkman style headphone socket.

This example has different colours top and bottom to change appearance from front and back when swivelled. It can look white or yellow or a mix of the two. Funky 70s cool? Moma thought the radio worthy as an exhibit and have it catalogued.

It’s a single medium wave band radio but still works pulling in BBC Radio 4, 5 Live, Capital Gold, etc. The tuning dial is hidden inside the larger diameter donut that’s accessed by swivelling apart. Volume is adjusted on the outer thumbnail control that also switches it on and off. Two 1.5v AA cells power the radio for several weeks of moderate use.

As with many of these radios batteries were often left in and forgotten causing corrosion and failure luckily this radio has not suffered that fate.

On the base plate: National Panasonic Model R-72S Frequency Range 525 – 1605 kHz (571-187m) Battery two “AA” size penlight batteries (National UM-3 or equivalent) 3v. Matsushita Electric Industrial Co. Ltd. Made in Japan.

Update

Here are pictures showing the battery compartment access slot and with cover removed showing the batteries next to the tiny speaker. The original model uses two AA batteries but as comments suggest later model uses a 9v battery.

Toot-a-loop battery compartment access

Toot-a-loop battery compartment slot

Toot-a-loop battery compartment

Inside the Toot-a-loop battery compartment