Anyone who struggles to drift off will love the soothing power of sound therapy. Close your eyes and let the calming sounds of nature gently lull you to sleep. Their calming, therapeutic effects create a relaxed and reassuring environment, as well as blocking out distracting background noises, such as snoring, neighbours, traffic and dogs. Set the auto/off timer to 15, 30 or 45 minutes. Can also be used with wired headphones (not incl). Powered by USB cable or 3x AAA batteries (not included). Dia.12.5cm. D4.6cm.