Compare the grip and buttons
Check the handle and the off control in the product photos.
Read overall width first
A round housing and a long handle offer different grip shapes. A photo without a scale cannot tell you how far your thumb will reach. Compare published widths and button placement.
Check whether settings share a button
Some buttons cycle through several settings before returning to off. Read the manual and try stopping the device away from the body. If it has separate motors, identify the off action for each.
Check what comes with the device
A USB-powered cable can still have a model-specific device connector. See the charging connector guide before ordering a replacement.