Specification: Condition: 100% Brand New_x000D_Item Type: White Noise Machine_x000D_Speaker Power: 5W_x000D_Power Supply: Adapter DC5V-1000mAh_x000D_Built-in Battery Capacity: 1500mAh_x000D_Battery Type: Lithium battery_x000D_Output Power: 4W THD10%_x000D_Frequency Response: 150Hz - 18kHz_x000D_Charging Time: Standard charging time is about 3 hours_x000D_Interface: New MICRO charging interface / Trans-flash card slot 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. PackageList: 1 x WhiteNoiseMachine 1 x Cable 1 x Instruction