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Ultra Low Frequency Audio Resonator, Schumann Wave Generator  Stability  For Sleep Meditation Massage Fitness

<ul><li>Stable Performance: Adopting high stability pulse chip, accuracy correction capacitor, accuracy multi adjustable resistor, and display capacitor to ensure high work accuracy</li><li>Circuit Protection: The 7.83HZ ultra low frequency generator has high accuracy and stability, with overcharge, overvoltage, overcurrent protection, and no voltage ripple</li></ul>

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Specification: Item Type: Schumann Wave Generator Material: PCB Product Size: Approx. 68 x 52 x 12mm / 2.7 x 2 x 0.5in Power Supply: 5V Micro USB Charging Cable for Interface Battery: 1 x 3.7V Lithium Battery, Capacity: 850mAh built in battery Usage Time: Charging current 250mA, about 6 hours to fully charge, working current about 7MA, can be used for about 200 hours 168 hours per week when fully charged Package List: 1 x Schumann Wave Generator1 x Data Cable1 x Storage Box Note: Do not tear off the protective film, disassemble and touch the components when trying the product.

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