Features: Adopting intelligent shaking technology, it can automatically sensing and continuously gently shake baby strollers, allowing babies to fall asleep peacefully even after the stroller stops, suitable for outdoor walking, shopping and other scenarios. The built-in white noise machine provides 10 different soothing sounds to help babies relax, suitable for use at home or while traveling. Equipped with adjustable speed function, parents can adjust according to their baby's preferences and condition, suitable for newborns and growing babies. The design is simple and can be quickly installed on various baby strollers without the need for additional tools, saving time and energy and providing convenience for busy parents. The use of quality component ensuring both the lightweight and durability of the product, as well as its stability. Specifications: Charging voltages: 5V/1A Battery capacity: 1200mAh Rate voltages: 3.7V Charging time: about 3H Size: approx. 128mm/5.04inch Housing Component: ABS + silicone Properties: Suitable for any strollers Technical parameters: Built-in white noise sound machine, providing 10 sounds, adjustable speed Package Includes: 1Pc Baby Strollers Rocker note: Other accessories demoed in the pictures is not included. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.