The vibrator I have been using lately is a drugstore one from a store called DM, it is not too big, purple in color, made out of silicone. It needs only one small battery and it lasts a long time. There are a few speeds, where it starts from the lightest consistent speed to medium and hard and superhard, after that you have the start and stop speeds, and as well as the consistent ones these ones have the same functionality. On the bottom of the vibrator there is a button where you can switch between the vibrations and if you long press you will turn it off. Me being pretty tight and having some anal issues because of it, this one glides in easily and does not cause any discomfort, or tearing. I can use it for an hour, just walking around, stimulating my prostate, because the vibrations are very pleasant, or while playing with myself. It really hits the spot and make me finish very hard and much.