40Hz Light and Sound Therapy Device for Gamma Frequency Brainwave Entrainment, Pocket Size Battery Powered, for Wellness Use

Precise Timing: 40Hz (25ms) light and sound precise timing in accordance with MIT research papers for gamma brainwave entrainment. Synchronous Audio-Visual Experience: Bright white LED light synchronized with 40Hz modulated audio output for enhanced effects. Adjustable Brightness And Volume: Knob and slider allow you to adjust the brightness and sound level to your preference. Compact and Portable: Small pocket-size device powered by 2 AA batteries, easy to carry and use anywhere, anytime. Versatile Application: Designed for gamma brainwave entrainment, this device can be used for various purposes.