* please fully charge the product for 120 minutes before the first usage.
* Please fully charge the product brfore each use to ensure continuous pleasure.
* Do not use alcohol, gasonline or acetone cleaners.
* Do not put the product directly into boiling water to clean it.
* Avoid direct sunlight and do not expose the product to high temperature environment.
* Do not use the product under swollen or damaged skin.
* For adults only, please keep the product out of the reach of children.