Feature: 1. Designed for nonscarring alopecia, androgenic alopecia, postpartum hair thinning, and receding hairline. 2. Helps enhance hair follicle blood circulation and metabolism to support hair retention and promote hair growth. 3. Delivers energy to help regulate scalp oil secretion, care for scalp health, and support a favorable environment for hair growth. 4. Equipped with 3 energy levels for adjustable settings based on user needs. 5. Free from UV radiation, with adjustable brightness and multiple dimming levels for user convenience. 6. Generates mild heat during operation, used in combination with red light to support scalp therapy. Parameter: 1. LED quantity: 48 pieces (25mW-LED chip) 2. Input voltage: AC 100-240V, output voltage: DC 5V 0.5A 3. External battery: not supported 4. Shell material: OK cloth + TPU 5. Optical power: 25mW 6. Size: 227.7*207.5*8.3mm 7. Spectrum: 660:850 8. Weight: 0.6kg 9. Maximum actual power: 25mW/pc 10. Power socket: USB Laser hair growth principle: The device emits low-level laser light that may help stimulate the scalp. When the light interacts with the skin, it may help increase blood circulation, which can support the delivery of nutrients to hair follicles. This process may help maintain healthy follicle function. The laser may also help maintain a cleaner scalp environment by supporting the reduction of microorganisms and sebum buildup, helping keep hair follicles clear. The light can reach the dermal layer of the scalp, potentially enhancing follicle activity and supporting hair growth.