Name: Portable infant sleep aid Charging method: USB charging Voltage input: DC5V=0.5A Power: 1W Battery capacity: 300mAh Use time: 23 hours Charging time: 1 hour Product weight: 66g Product weight with color box: 125g Product color: white Product size: 93*80*28mm Color box size: 11.8 × 11.3 × 3.5CM Sleeping music a total of 10: white noise, lullaby 1, crickets, waves, clockwork, birds, heartbeat, lullaby 2, the sound of running water, lullaby 3 Specifications: 1 、Smooth and natural sounds. White noise, ocean waves, birds chirping, heartbeat, clock, crickets, running water and 3 lullabies. Choose the sound according to preference and need to create a peaceful environment, so that the baby quickly fall asleep and fully rest. 2 、Automatic power-off timer. This white noise machine can be played without interruption, but also has an automatic power-off timer, set to 15 minutes, 30 minutes or 60 minutes (green, blue and red light display), to avoid forgetting to turn off when you go to sleep and save energy. 3, automatic detection of white noise. Without turning on the power, please press and hold the auto button for 2 seconds to enable noise detection for 10 seconds. If there is noise around, it will automatically turn off the music and stop after 15 seconds. The detection will be cycled. The detection distance is 6-10 meters. 4 、 Not only for sleep: Our white noise machine can not only mask the noise and improve the quality of sleep, but also relax. It is suitable for use at home, office, dormitory, nursery or wherever you want to rest. 5 、Small and portable. Only 9.3*8*2.8cm, it takes up very little space on the nightstand and can easily fit into your bag or suitcase, making it the perfect travel companion. USB charging, once charged, can be used for up to 36h continuously for long term use.     Examples of baby music sleep aid features. 1. 10 sleep aid music: white noise, lullaby 1, cricket chirping, ocean waves, clock, bird chirping, heartbeat, lullaby, running water, lullaby 3. 2. Timer function: 15 minutes (green light) / 30 minutes (green and blue light) / 60 minutes (green, blue and red light) can be timed to avoid forgetting to turn off when you fall down. 3. Automatic noise detection button: no need to turn on, long press 2 seconds to get noise detection for 10 seconds, stop after 15 minutes of music off, cycle detection, detection distance of 6-10 meters. 4. Charging indication: green, blue and red indicators show the power for 30%/70%/100%. 5. Small and compact, with lanyard delivery, easy to carry and use. Package Included: 1*Sleeper 1*USB cable 1*Lanyard