Check the power source and stop action
Confirm what ships and how each function turns off.
Check what comes in the box
Rechargeable means you need the correct charging connection, but it does not tell you whether a wall adapter ships. For a battery-powered product, check the battery size, count and whether they are included.
Test the controls with the device on a table
Follow the manual to start and stop each function before using the device. If a model adds pressure adjustment, find the instructions for reducing pressure as well as turning off vibration. Make sure you can reach the controls you would need to use.