WN90 White Noise Machine Sleep Sound Machine Support TF Card With 3.5mm Jack

1. 22 Soothing Sounds: Choose from 9 white noises, 5 relaxing nature sounds or 8 sleep songs. There are specific sounds that can be used to help promote sleep, regardless of ambient noise.2. It is easy to switch to different sounds, and it is easy to adjust the volume. Perfect for drowning out too much outside noise and getting a deeper sleep!3. With 30, 60 and 90 minutes auto off timer. You can set it to a time or let it run overnight4. External interface: MICRO charging interface/TF card slot5. Speaker system: 5W x 1 2 inches6. Battery: built-in 1500MAH lithium battery7. Output power: 4W THD10%8. Frequency response: 150HZ~18KHZ9. Charging time: the charging time of the standard DC5V-1000MA power supply is about 3 hours10. Audio playback time: audio playback at medium volume for more than 6 hours11. Dimensions: W90 x D90 x H47MM12. Product net weight: 202GPacking list:-White Noise Sleeper x 1-USB cable x 1-Lanyard x 1-Instruction manual x 1-Packing box x 1