This device can be used as evidence in cases of harassment (power harassment, moral harassment, sexual harassment), disputes over "he said, she said" situations in business negotiations, and more, for employees, salespeople, bus and taxi drivers, etc. It's also convenient for recording meeting minutes. Purchased in 2024 and used about twice. I no longer need it as I quit my job, so I'm selling it. Please refer to the English instruction manual for more details.