Relaxound GMBH produces musical und auditive additives for relaxation and joy. The ZWITSCHERBOX has a motion sensor. It will set off an exhilarating singing of birds, that goes on for two minutes and then gently subside. Breathe deeply, relax, and replenish yourself with new energy. The ZWITSCHERBOX can help us do it. For thousands of years the joyfull singing of birds gives us intuitive relaxation.