Features: Experience unparalleled frequency customization with our adjustable Schumann Waves Generator, offering a ranges from 0.01 to 99999Hz with precise 0.01Hz increments, surpassing traditional limitations. Featuring a color screen, this device allows effortless selection of multiple waveforms, including square and sine waves, providing versatility beyond just the Schumann resonance. Ideal for stressed professionals, students, and individuals, this generator aids in improving sleep quality. Perfect for creating a environment in bedrooms, offices, it help you relax and unwind. Crafted from plastic, this electronic suite integrates seamlessly into your lifestyle, making it a essential tool for well being and stress relief. Specifications: Material: Plastic Adjsutable Ranges: 0.01-99999hz Port: VGA Output Port: 3.55mm Earphone Port Size: About. 8x2cm/3.15x0.79in Package Includes: 1 Set Schumann Waves Resonance Generator note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.