Adafruit STEMMA Speaker - Plug and Play Audio Amplifier - JST PH 2mm AM3358 but battery and USB cable

but battery and USB cable are not included (available separately)

The real-time clock (RTC) on Witty Pi 4 Mini has been calibrated in the factory and Witty Pi 4 Mini’s firmware also makes temperature compensation for the crystal

but one can be easily purchased separately

Reset button for bootloader mode or restarting code

Adafruit STEMMA Speaker - Plug and Play Audio Amplifier - JST PH 2mm AM3358 but battery and USB cableHey, have you heard the good news? With Adafruit STEMMA boards you can easily and safely connect sensors and devices, like this Adafruit STEMMA Speaker Plug and Play Audio Amplifier. This board features a class D audio amplifier and a 1 Watt 8 ohm speaker, delivering good quality sound for music, tones, speech, and more. It requires only ground, 3 to 5V power, and an audio signal for operation. The audio signal input is AC coupled on the board and