thinner than a 1 € coin, made in Japan, in very good shape and working well.
This collector first generation Credit Card Radio has FM 88-110 MHz frequencies
Antenna : earphone cord with output micro jack
Power Supply : one DC3V CR-2016 Lithium Battery
Power consumption : 20 mW (approx. 8 hours battery life)
Dimensions :  0.11" D (2.8 mm) x 3.36" W (85.5 mm) x 2.12" H (54 mm)
Furnished accessories : earphone with cable & Lithium CR-2016 battery

Weight (including accessories) : 0.74 oz (21 g),  (3,17 oz (90 g) with shipment packing)