Physical description
Front and back cover made of metal and held together at the back with a screw.
Push Button on the left (Press to Talk), also red wheel for turning transistor on and adjusting volume.
Aerial on the right at the top. Aerial 1.40 m long when extended. Front cover has inbedded a silver square metal mesh for hearing sound and speaking.
Brown leather cover with zip for protection.
Inscriptions & markings
Front:
9 Transistor/Sharp/ Model CBT-1A
Back:
Earphone/ Press to Talk/ Made in Japan
Handwritten on a piece of tape: Batteries replaced
1-5-1968, 6-6-1975