Single power supply 2.4V
– 5.5V 3 seconds voice capacity is provided 1-bit input port (P1) and 1-bit I/O port (P2) are provided 16*1 bits RAM are provided Built in a high quality speech synthesizer Two different playing rate, 6KHz and 8KHz. Built in a PWM Direct Drive circuit output BUO1 and BUO2 di.