6)?After-sales Service?Our speaker can be returned or refunded if you are not satisfied within 30 days of purchase (the product is not damaged). If the product is faulty, we will provide a replacement or refund it within 12 months of purchase. If you have any further problems, please feel free to contact us directly. 5)?Bluetooth Function?Easy to pair with most Bluetooth-enabled devices, such as iPhone, Android, Laptop, computers, smartphones, tablets. Within 33 ft away from your device, provides seamless connection and incredible wireless stable signal. 4)?Memory Fuction & Unique Design?Automatically restores the previous volume, sound and time. Triangle design with 4.3 inch*4.3 inch *5.5 inch, it is portable for home, office or travel, can give you a perfect sleep. 3)?Precise Volume & Timer Settings?With 16 Levels of Volume, it is perfect for baby sleeping. And you can set 30 mins, 60 mins, 90 mins, 120 mins and continuous play, control the comfort level for your own environment. 2)?Sleeping Better with 33 Soothing Sounds?White noise, fan sounds, and multiple nature sounds including ocean, lullaby, waves, rain, thunder, storm, brook, bird chirping, summer night, campfire. 1)?Sound Machine & Alarm Clock?Designed with sound machine and alarm clock in one integrated machine. This White Noise machine help you relieve stress, relax your mind and create a relaxing sleep environment. It also can be used as an alarm clock, start your morning with a smile.