Wave Adjustable Chargeable Low Frequency Portable for Bedroom

Description: Waveform and Signal Source: Pure single sine wave 7.83Hz no clutter and harmonics standard waveform; Using DSP signal synthesis technology it has stable signal and stability. Power Supply: Mlico USB interface 5v power supply can be powered by mobile phone chargers power banks easy to use. Power Output: Adopt high fidelity drive amplifying circuit cost no waveform distortion stable output power. External Port: You can connect an external oscilloscope to observe the waveform: you can also connect an external port an external speaker and feel the waveform vibration by hand. Indicator Light and Frequency: There is a breathing light to indicate operation which can help you sleep; .83Hz sine wave with stability. Specification: Material: ABS Product weight : 37g Power supply interface: Micro USB (5V) Rated power consumption: