The Shiatsu function and the vibration mode separately or work hand in hand. As you want, with or without heating. The heating temperature is moderate. The operating concept works. Enspannung is inevitable. As with all electric appliances of this type, you should not be sensitive to electromagnetic pollution, because any engine, any coil induces magnetic fields and static electricity. The leather upholstery of a pillow acts favorably. He invites himself to not static. The Bibberkissen is highly recommended.