The Polar Night White noise machine Smart is a handy aid to help you sleep. The device is suitable for use by people of all ages. The device has 34 different soundscapes to help take you to the land of sleep. The soundscape is also supported by night lights and seven different colour options, the brightness and colour of which can be adjusted using a button on the device. The rechargeable battery allows you to use the device for up to 10 hours and take it with you wherever you go. The device supports a smartphone app to get the most out of White noise machine Smart. The device also features a 3.5mm headphone jack, a night light function, 32 different sound levels, a timer and a memory function.Product information: Operating voltage: 3.7V Weight: 412g Length: 110mm Height: 110 mm Width: 148 mm Timeout: 30, 60 or 90 min CE marked Material: ABS shell material Included in the package: device, USB C charging cable, rechargeable battery and manual.