Features: Intelligent shaking function: Simply turn on the switching button, and the shaking mode will automatically start after 3 seconds, gently imitating natural shaking to effectively soothing the baby. It will automatically turn off after 45 minutes to help fall asleep. Multiple white noise option: Built in multiple white noises create a comfortable sleeping environment for babies, helping relax and fall asleep faster. Music playback: You can connection to your phone via BLE and play your favorite music, allowing your baby to enjoy a peaceful sleep time amidst sweet melodies. Safe and convenient design: equipped with a buckle, it can be easily fixed on the stroller or crib, ensuring the safety and stability of the device, and can be used at any time whether at home or on the go. Long battery service life and efficient charging: Equipped with a 1200mAh large capacity battery, it can work for up to 6 hours; Using Type C USB charging, charging only takes 3 hours, convenient and fast. Specifications: Component: plastic Size: 117mm/4.60inch, as shown in the picture Voltages: 3.7V Power: 3W Battery capacity: 1200mAh Charging voltages: 5V/1A Charging current: 450mA Charging time: 3H Charging way: Type C USB Working hours: 6H Package Includes: 1Pc Portable Baby Strollers Rocker 1Pc Fixed Bracket 1Pc Type C USB Cable 1Pc Instruction Manual note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.