Sleep Noise Machine - 24 soothing sounds: includes natural ambient options such as wind, rain, thunder, electricity, running water, and waves, as well as animal sounds like crickets and birds, plus lullabies and sleep aid music to help crying babies settle and stay asleep, and to support adults in falling asleep and relaxing. - Built-in recording: features a memory function that records up to 180 seconds of sound. - Compact and portable: product size 4.5 x 2 inches; net weight 6 ounces. The lifting ring allows hanging on diaper bags, strollers, cribs, and more. - Comforting lighting: a night light with 7 mood colors and 6 adjustable brightness levels. Soft lighting protects eyesight and creates a conducive environment for restful sleep while providing enough light for nighttime care. - Long-lasting battery: built-in 2000 mAh battery. Charging time about 3 hours; playback time over 12 hours on a full charge. Timer options of 30, 60, or 90 minutes, with all sounds and night lights automatically turning off when the time is up. - Bluetooth and connectivity: Bluetooth function lets you stream your favorite music from a mobile device to the white noise machine. - Versatile applications: can provide background music for yoga, relaxation, meditation, concentration, office privacy, sleep, walking, driving, travel, and hotel stays. - Family and pet use: designed to help babies and adults sleep, and to soothe dogs that are sensitive to noise. Suitable for home, office, travel, and nursery environments.