Features: Experience soothing white noise with 30 soothing sound natural sounds like waves and rain, helping you fall asleep easily in noisy environments, and enjoy long lasting 20hour battery life for uninterrupted rest, making it an essential portable sleep aid for daily use. This white noise machine features a durability ABS shell, smart timer settings from 30min to 90min for automatic shut , that ensures safety and comfort during extended use. Designed for dwellers, frequent travelers on business trips, and health conscious individuals seeking a reliability sleep sound machine to combat stress and improve nightly routines. Perfect for creating serenes atmospheres in bustling city apartments, during long flight or hotel stays, or as a bedside companion, this compact device easily fits in bags or nightstands. Enhances your sleep quality with this travel friendly sleep aid, providing consistent peace mind through its nontoxic construction, ideal for achieving deeper, restorative rest every night. Specifications: Component: ABS Color:White Size:Approx.72x38mm/2.83x1.5inch Battery:1000mAh Features: Portable,White Noise,Smart 30min/60min/90min Timing,Night Light; Usage scenario:, Business travel, Long-distance business trips, Home sleep aid; Package Includes: 1pc Sleep Aid note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.