I use the Big O on my girlfriend by attaching it over my strap-on. It is a great addition, especially for the money. She likes the bullet's multiple functions. Since the power switch is on the side of the toy, it's quite easy for me to reach down & change the toy's settings. Also, it is more than just for clitoral stimulation. We realized the vibration extends to the rest of the shaft and stimulates the G-spot, too. So, I kept the ring on my dildo and turned it on when we switched to doggy-style — she loved it!

We didn't expect much playtime from a vibrating cock ring powered by only two watch batteries, and the product information says you only get 80 minutes. However, I was sure we got way more than that out of it — we were happily surprised!

The material is TPR silicone, a blend of silicone and rubber. Please keep that in mind when using a lube (you can't use a silicone-based lube with a silicone toy or accessory). TPR material is porous, so it's not safe to share the toy since you cannot sanitize it properly. We didn't notice any strong smell from the product, so that's always nice.

The Big O is a fun, non-obtrusive, and hands-free way to add some kick to the game. It is easy to clean. I wash it under warm water with soap, towel dry, and it's ready to go the next night. Because the material is a bit sticky, she stores the ring inside a pouch in her underwear drawer to keep it lint and dust free when not in use.

My girlfriend's only comment/complaint was that the bullet sleeve with a vertical design would be better, so the vibrator can have consistent contact with the clit. That being said, the ring did tend to shift around on my shaft sometimes, so the bullet wasn't on top to hit her clit, but that was only a slight issue. In order to accommodate people who wear it around both the penis & balls, the Big O is stretchy. For people who only wear it at the base of the shaft (whatever the thickness), the ring has some "wiggle" room.

Tip: I like to keep the toy on for doggy-style. She loves it because while the bullet provides direct stimulation to her clit, the vibration also travels through the entire shaft to stimulate her G-spot in any position.