Features:
1. Small but mighty - a perfect travelling noise machine for baby on-the-go and adult
2. Built-in 17 soothing sounds ( 5 white noise ,5 fan sounds ,7 nature sounds) 
3. Built-in 1200mAH battery, 12-15hours standby time 
4. Warm White Night Light create gentle and warm atmosphere to make baby quiet
5. Auto-off timer : 30-60-90 minutes and continual play
6. Speaker Spec: 40mm 2 ohm 3W
7. Frequency response: 60HZ - 20KHZ
8. Product size:  90*92*45mm
9. Product Certificates: CE, ROHS, FCC, MSDS, UN38.3