Features: The sound machine can improve sleep environment to help you quickly enter the sleep state and improve the sleep quality. Create a peaceful sleeping environment, sooth baby to sleep faster. Built-in 26 kinds of sounds, which are of high fidelity to aid sleep, including 8pcs white noise, 8pcs sound of the wind, 10pcs natural sound (water droplets, waves, Bavarian wind, forest, fetal heartbeat, train, bonfire, spring rain, light years, summer night). Volume adjustable, you can adjust it according to your demands easily. Eardrum protection. Time setting design, very convenient to use. With memory function, it will automatically play the music that last time shut down. USB power supply, plug and play. Low power consumption. Easy to connect with most USB devices to use, like laptop, power bank, USB adapter, etc. Perfect for babies, restless sleepers, shift workers, students to get deep and uninterrupted sleep. Also a delicate gift for your families and friends. Lightweight and compact, easy to carry, perfect for home and travel use. Specifications: Input: DC5V/1A Rated Power: 5W Power Cord Length: 150cm Color: White Material: ABS,PC Item Size: 110 * 75 * 97mm / 4.3 * 3 * 3.8in Package Size: 14 * 8.5 * 11.3mm / 5.5 * 3.3 * 4.4in (L*W*H) Package Weight: 522g / 18.4ounce Package List: 1 * White Noise Machine 1 * USB Cable 1 * User Manual(EN/DE/FR/ES/IT/JP 5 languages)