The Ego e1 by Jopen is a powerful, waterproof, silicone, vibrating cock ring. It is perfect to add to a sexual encounter with your partner to spice things up in the bedroom. The Ego line is strong enough that the vibrations can be felt from the ring, through his penis. It can also be used alone by a male, however, females can use it too by slipping it over their favorite non-vibrating toy.
The multiple speeds and easy to use push button, the Ego e1 is great for any user.

The Ego e1 is made of 100% body safe silicone, rating a 10 on Eden's safety scale. The silicone has a lot of stretch to it in the ring portion allowing it to fit most men. The silicone is smooth and velvety, the slightly visible seam cannot be felt and won't district any user. It has a bit of drag to it so applying a water based lubricant inside the ring can help get it over the penis.

The Ego e1 has a broad head making it ideal for the woman during intercourse as it comes into contact with her clitoris. It hits the right spot every time, though lube can cause it to turn during use, so you may need to readjust it.
As mentioned before, there is a lot of stretch to the e1 making it bound to fit just about any man.
It is easy to put on, easy to use, and comfortable for the guy using it.

The measurements are:
Max stretched diameter: 2 1/4"
Unstretched diameter:1 1/4"
Diameter: 1 1/2"
Length: 2 1/2"

Compared to the Ego e3:

The Ego e1 is easy to use. It will have to be charged before use. It comes with a USB charger and can take up to 3 hours to fully charge. The LED light will illuminate while charging and turn off once it is fully charged. It comes locked and requires you to push the button on top (where the light is located) quickly 3 times to unlock it. To lock it, simply do this again.

To turn it on simply push and hold down the button until desired speed is reached. If you want to decrease speed you will have to turn the ring off and start over. Pushing the button again once it is on will turn it off.

The vibrations are very powerful and travel through his penis well so that the vibrations can be felt. The vibrations are pleasing for both people during use. The Ego line is the most powerful line of cock rings out there as of now, in my opinion (of course). If you're looking for power, these rings have it. There aren't any vibration patterns, but the strength makes up for that.

The Ego e1 is fairly quiet and it won't be heard outside of a closed door.

Because it is waterproof, you can take it into the shower or bath with you!

The Ego e1 is easy to care for, for cleaning you can use a mild soap and water, toy cleaner, toy wipes, or a 10% bleach solution.
The box makes for great storage as it fits snuggly in place. If you don't use the box, you will want to find a place to store it where it won't attract lint, hair, dust or other particles.

The packaging is pretty tasteful, though not very discrete when turned over because it displays the ring on the back and gives details about it. It comes with an instructional booklet and the USB charger. It comes with an optional 10 year warranty which you can find out information about by visiting the manufacturer website.

I have tried the e3 from the Ego line and I find that it is my favorite due to the shape. The e1 and e3 to me, feel the same in intensity. They both hit the right spots and have a lot of power. Both are more powerful than the JeJoue Mio.