Schumann Resonance Wave Pulse Generator with USB Cable & Screwdriver Chargeable 7.83HZ Schumann Wave Ultra-Low

Features: The 7.83HZ Schumann Wave can help people relax physically and mentally, improve body health and work efficiency, reduce mental stress. The 7.83HZ Schumann Wave Ultra-Low Frequency Pulse Generator is of high accurancy and stability. The pulse generator is adopted with high stable frequency acquisition elements, precision correction capacitance, precision multi-loop adjustable resistor, display solid capacitance. Equipped with high-quality lithium polymer battery, with overcharged, over-voltage, over-current protection. There is almost no voltage ripple in the voltage supply. You can apply it in your bedroom, office, study, tea room and so on. Easy to operate, with a USB cable and a screwdriver for easy installation.
Specifications:
Battery: Lithium polymer battery
Battery capacity: 850mah
Time: charging current 250mA, 6 hours full of electricity
Working current: 7mV
Working time: 200 hours (full of electricity)
Power: 5V micro-usb android charging cable
Material: Metal
Color: Multicolor
Weight: 71g/ 2.5 oz
Item Size: 6.8 * 5.2 * 1.2 cm/ 2.7 *2* 0.5 in
Package Size: 10*6cm/ 3.9 * 2.4 in
Package List: 1*Ultra-low Frequency Pulse Generator 1*USB Cable 1*Screwdriver