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This product can not only output 7.83Hz Schumann wave, but also join the programmable FM technology, can adjust the frequency in the range of 0.1Hz~30KHz;. For example, press [7][.]. [8][3], then press [OK], it can be set to 7.83Hz default power-on output 7.83Hz, setting range 0.1~30KHz.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.