Features: Very Wide Frequency ranges This romance generator covers 0.01Hz to 99999Hz with precise 0.01Hz tiny adjustment, delivering accurate standard frequencies like 7.83Hz for scientific research and low to high frequency experiments. Sine Output Featuring digital technology, it produces stable 3V sine waves without interferences , perfectly simulating Earth's natural resonance for relaxation and auditory studies. Triple autonomous Outputs Equipped with three separate output ports supporting simultaneous sine, square, and inverted square waves, enabling easy connection to antennas, monitors, and oscilloscopes for efficient debugging. Compact & Energy Efficient Design With under 1W power consumption and USB 5V power supply, its 15x15cm portable size includes an optional acrylic dust cover, ideal for desktops, labs, or home use. Multi Purpose Applications Functions as both a signals generator and romance simulator, suitable for physics/engineering education, sound equipment testing, resonance research, and frequency sensitive product development. Specifications: Component : ABS. Size: about 15x15cm/6x6inch Type: with shell/without(optional) Frequency adjustment ranges: 0.01Hz to 99999Hz, supports 0.01Hz fine-tuning. Package Includes: 1 x romance Generator 1 x USB Power Cord note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.