Features: The 3 in 1 White Noise Sound Machine is your ultimatedly sleep companions, featuring colored lights and multiple combination sounds to create a personalizing and calming environment for restfully night. This sound machine includes 8 natural sound effects and a powerful speaker system ensuring auditory performances. For insomniacs, individuals under stress, and anyone enhances sleep, this device to diverse needs with its intelligent sound adjustment and multiple white noise type. Perfect for bedrooms, offices, or any space requiring relaxation and improved sleep conditions, the Sound Machine seamlessly integrates into various environment. This white noise machine not only enhances your sleep experience but also adds a touch of elegant to your living space. Specifications: Size：about 180x73x80mm/7.09x2.87x3.15in Component：ABS Connection: Bluetooth-compatible connection 5.0 Frequency Response Ranging :60Hz-15KHz Signal-to-noise ratio:60dB or less Number of speakers:3 Effective distance:12m Power supply: usb Battery capacity: 2000mAh-4000mAh Package Includes: 1PC White Noise Sleep Sound Machine note: Please allow 0-1cm error due to manual measurement. please make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual color.