Features 1. 30 soothing sounds: The white noise recorder provides a total of 30 soothing sounds in six categories 2. Customized sound experience: With the integrated 3.5mm headphone jack, you can listen to your favorite sounds privately in public without worrying about disturbing others. 3. Sleep timer and memory function: The sleep sound system can play continuously or automatically turn off the timer for 30 or 60 minutes. Whether you are taking a nap, relaxing, meditating, or concentrating, there is no need to manually turn off the machine. It can also remember permanent sound, volume, and timing settings, so it can quickly play the settings you want every time you use it. 4. Effectively creating noise: excellently masking distracting environmental noise, creating a perfect sleeping environment, effectively soothing children and infants, and calming dogs that are sensitive to sound. The ideal white noise generator can protect office privacy and improve attention during work or study. Very suitable for insomnia, yoga, work and study, speech privacy, and elderly care* Tip: USB power supply, non rechargeable. 5. Compact design, the best gift: a lightweight and portable white noise machine that can be easily placed in a suitcase and taken anywhere. Specification Battery capacity: 1200mAh lithium battery Voltage input: DC 5V 1A Speaker output: 5W Timer mode: 30 minutes/60 minutes/timed playback Product weight: 426 g Materials used: PC+ABS fireproof Product function: Built in 30 audio sources, 5 fans/white noise/natural/waves/thunderstorms/baby hypnosis each, can be set to play at a time of 30 minutes/60 minutes Package Include: 1x white noise machine 1 x USB charging cable 1 x User Manual