Panasonic portable radio cassette, model RX-M70M3, considered a classic (Collectible) device. Specifications: Features a 3-Way Speaker System with Bi-Amp dual amplification circuit, and power output reaches 30 watts (PMPO). Waves: Supports radio with four bands (FM, MW, SW1, SW2) for wide reception. Power: Operates either via built-in AC or by 4 R20 batteries. Features: Includes a built-in microphone for recording, and a control knob