A Schumann resonance generator recreates the Earth's natural 7.83 Hz field indoors. Our range covers three devices: the V1 Classic holds a fixed 7.83 Hz, the V2 Pro adjusts 0.1-999 Hz, and the V3 Max is fully programmable from 0.01-9,999 Hz with five presets and up to 250 ft² coverage. All ship free with a 30-day trial and a 4.8★ rating from 100+ reviews. Not sure which fits? Compare the three below.