Stable and Reliable - Ensures stable frequency output with default 7.83Hz and voltage amplitudes of 3V for sinusoidal and 5V. Multiple Waveforms - Provides sinusoidal and inverted options for versatile applications. Promote Relaxation and Well Being - Emits a sinusoidal waveform that creates a relaxing environment. Advanced Specifications - Powered by a USB interface with a frequency of 7.83Hz, the device has less than 1W of rated power, ensuring efficient energy utilization. Compact and Convenient - Compact size of 10.2x8.1cm and USB powered for easy carrying and use at home or while traveling. Ideal for bedroom use to help support sleep and soothe the nerves. Suitable for office environments to promote relaxation and improve focus. Great for leisure time to rest the body and mind. Color: As Shown Material: PCB Package Contents: 1 x Pulse Generator (not a finished product, requires assembly) Only the above package content is included; other items are not part of the package. Note: Light reflection and different displays may cause slight variations in color compared to the actual item. Measurement error allowance is +/- 1-3cm.