This is one of his favorite toys for solo play or mutual stimulation.

Long Lasting - One charge, via USB, lasts a long time. We can get multiple sessions out of one charge.

Good Vibrations - The twelve vibration modes are enhanced by the sensor located in the handle which variably increases vibration intensity. Just squeeze the bulb harder for stronger vibrations, loosen grip to reduce vibration. The intensity lock button can be awkward to press while squeezing for the desired intensity.

Easy Cleaning - A simple twist of the bezel allows removal of the bezel and sleeve for easy cleaning. Use warm water and mild soap, or use EdenFantasys Toy Cleaner.

Average Accommodation - This toy can accommodate up to four inches of penetration, which is typical for these toys.

There are some quality control issues with this product's sleeve. In the attached picture the sleeve is turned inside out to show the defects marked with red circles.
The two holes in the sleeve (middle) are pockets where fluids, including water from cleaning, can stay. If your sleeve has the pockets, be sure to clean them and make sure they are dry before putting away the toy.
The deformed edges can be uncomfortable if not enough lubricant is used. Important safety tip.