1. STABLE AND RELIABLE: The ultra-low frequency pulse generator utilizes imported chips for more stable frequency generation and pulse width. Features a double-layer FR-4 2T PCB board for enhanced stability and reliability. 2. INCREASED TRANSMISSION RANGE: Features an improved 28-turn transmitter coil for extended transmission range. Includes a power switch; toggle to ON to power up, and OFF to power down. 3. EASY TO USE: The Schumann wave generator supports both TYPE-C (with reversible plug) and USB Micro power connectors, ensuring user-friendly operation. 4. STATIC PROTECTION TUBE: The Schumann wave resonance generator is equipped with a high-power TVS static protection tube to prevent damage to the chip from hand and air static electricity. 5. PPTC SELF-RECOVERY FUSE: Incorporates a PPTC self-recovery fuse to prevent short circuits from completely cutting off power to the board. The fuse automatically resets to normal after the short circuit is removed. We are committed to providing exceptional customer service. From order placement to delivery and after-sales support, we ensure your rights and interests are protected every step of the way.