1. Material: ABS
2. Input: 5V / 0.5A
3. 10 sleep-aid music: white noise, lullaby 1, cricket call, sound of waves, clock, bird call, heartbeat, lullaby 2, sound of running water, lullaby 3
4. Working power: 1w
5. Charging time: 1 hour
6. Use time: 23 hours
7. Battery capacity: 300mah / 3.7v
8. Power supply mode: USB charging / built-in lithium battery
9. Dimensions: 93 x 80 x 28mm
10. Weight: 66g