Features: 1The white noise machine is compact and light, with professional manufacturing, stable performance and high reliability, easy to carry. 2With the graceful appearance suitable for the needs of modern people, it is integrated with modern home furnishings. 3White noise can play a role in adjuvant treatment of some neurological diseases. 4The white noise can promote people's relaxation and improve work efficiency. 5It can be used to stabilize babies when they cry, and it is also very suitable for people with insomnia. Condition: 100% Brand New Item Type: White Noise Machine Speaker Power: 5W Power Supply: Adapter DC5V-1000mAh Built-in Battery Capacity: 1500mAh Battery Type: Lithium battery Output Power: 4W THD10% Frequency Response: 150Hz - 18kHz Charging Time: Standard charging time is about 3 hours Interface: New MICRO charging interface / Trans-flash card slot Package Included: 1 x White&nbspNoise&nbspMachine 1 x Cable 1 x Instruction