I tested headphones and the speaker is also in working conditions. Tape was sealed but i opened to test the unit.

The Sony TCM-373V Cassette Voice Recorder is a portable tape recorder designed for dictation and voice recording. This handheld unit features wireless connectivity and a speed control function for easy operation. With a sleek design and compact size, this recorder uses microcassettes for recording media, making it a convenient and reliable tool for business professionals. Made by Sony, a trusted brand in electronics, this model is a durable and efficient solution for capturing audio on-the-go.