Product material: ABS+silicone
Product diameter: 100mm
Suitable for ages: suitable for all ages
Product function: A total of 4 levels of adjustment, one or two or three levels of vibration intensity can be adjusted freely, four levels of soothing mode, vibration frequency can be adjusted by sub-vibration.
Product features: solid bumps for better massage of bones and muscles, USB charging mode, waterproof (surface flushing possible)