Portable Sound Machine combines 15 soothing sounds, adjustable brightness night light, and a compact design for sleep and relaxation. Certified with CE, FCC, and RoHS, ensuring compliance with international safety and environmental standards, providing market access assurance. With a battery life of up to 7 hours, Type-C charging, and support for customization. Battery Capacity 3.7V 500mA Timer Setting: 30/60/90min Auto Shut Off Work / Charging Time: 7Hours / 2Hous Interface: Type-C Charging Port, Compatible with PD fast charging + overvoltage protection