- 5V USB charging, with a full charge in about 3–4 hours and the ability to run continuously for over 100 hours on a single charge. This provides long-lasting operation with a quick top-up when needed. - Designed for both men and women; suitable for anyone seeking sleep and relaxation, regardless of lifestyle or daily routine. - Versatile placement for bedrooms, offices, or any room where tranquility is desired; helps create a soothing environment that supports calm and concentration. - Rechargeable shielded generator delivering Schumann resonance at 7.83 Hz to support relaxation and improve sleep quality. This low-frequency output is intended to aid a calm mind and restful sleep. - Clear, straightforward operation with a focus on reliability and consistency; compatible with standard 5V USB power sources. - Use scenarios: - In the bedroom at bedtime to promote relaxation and improved sleep onset. - In a home or office workspace to foster focus, steadiness, and reduced stress during work or study. - In a meditation or quiet-space area to enhance a calm atmosphere during mindfulness or restorative practices. - Size and materials: specific dimensions and materials are not provided in the available information. Function, performance, and charging compatibility are as described.