The Science of Resonance. Every material object and living thing has a natural resonance frequency determined by its physical structure. When exposed to external frequencies matching its unique resonance, an object becomes stronger, more stable, and its natural energies more coherent. This applies to humans as well; we sense and experience this energy in moments of relaxation, focus, and connection with nature or loved ones. Q-Link® products, featuring Sympathetic Resonance Technology™ (SRT™), reinforce the body’s resonance, returning it to a balanced state. SRT™ has shown effectiveness in numerous studies and has garnered positive feedback from users over three decades.