Feature 1Adopted of Mini Usb port power supply, typically+5V 0.1A,and comes with USB cable 2Imported ultra-low static power consumption main control IC,to make the waveform more stable 3Output 7.83HZ pulse square wave, whose duty cycle is 50%. Frequency can be fine-tuned for correction 4This product is Schumann wave 7.83HZ very low frequency generator, features high accuracy and stability. 5For audio-visual space - to enhance the sound field and audio-visual effects,For the bedroom - to help sleep soothe the nerves, adjust insomnia, For office - to relax and improve work efficiency, Used to create space - to improve inspiration,For the teaSpecification Features: Adopted of Mini Usb port power supply, typically+5V 0.1A,and comes with USB cable Imported ultra-low static power consumption main control IC,to make the waveform more stable Output 7.83HZ pulse square wave, whose duty cycle is 50%. Frequency can be fine-tuned for correction This product is Schumann wave 7.83HZ very low frequency generator, features high accuracy and stability. For audio-visual space - to enhance the sound field and audio-visual effects,For the bedroom - to help sleep soothe the nerves, adjust insomnia, For office - to relax and improve work efficiency, Used to create space - to improve inspiration,For the tea ceremony - resting body and mind Specification: Power supply:+5V Current: 0.1A Pulse square wave:7.83HZ Package list: 1 x Pulse Generator 1 x USB cable .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }