Feature:1. 26 TYPES OF MUSIC: Sound machine with 26 types of music, 6 white noise, 6 fan sounds, 4 lullabies, 10 nature sounds.2. LIGHT AND TIME SETTINGS: Sound machine with 5 levels of warm light, 7 dazzling lights and 3 time settings (30, 60, 90 minutes).3. MEMORY FUNCTION: The portable sound machine has a memory function, so that when you use it again, the mode will be the one you set last time.4. BACKLIGHT, VOICE REMINDER: Portable sound machine can recognise the on button and the warm light button in the dark, timer and initial music alert.5. LONG BATTERY LIFE: Portable sleep sound machine with built in 1000 mAh battery for long battery life.How to Use:1. How to use the power button:Long press the power button to turn on the sound machine, the green light is on. Short press to pause. When the device is out of power, the power indicator will flash red.2. Timer: Press the timer key to set 30, 60 or 90 minutes timer. When the time is up, the recorder will stop working.3. Warm night light: There are 5 adjustable brightness levels. Short press to switch the brightness.4. Colour light: Press the colour light button, the light turns on and the colours of the light are in order: blue,