Features:
1.Small but mighty -a perfect travelling noise machine for baby on-the-go and adult.
2. Built in 1200mA battery, 12-15hours standby time 
3. Help settle-in & stay asleep - create peaceful sleep environment 
4. Adjustable Brightness for Warm White Night light
5. Built-in Auto-off timer 30-60-90 minutes and continual play
6. 21 soothing sounds ( 6 white noise ,6 fan sounds , 9 natural sounds)
7. Memory Function: Save your last Sound, Light brightness, Timer
8. Speaker Spec: 40mm 2ohm 3W
9. Frequency response: 60HZ - 20KHZ
10. Product size: D83*H83mm
11. Product Certificates: CE, ROHS, FCC, MSDS, UN38.3