Jamaican Black Stone is a herbal product for the men who want cure the premature ejaculation. Jamaican Stone makes you last longer in bed and will cure the sexual problem of premature ejaculation and prolong the power of your sexual relationship. One simple application could delay your ejaculation for up to 4hrs and still maintain your erection. Jamaican Black Stone has helped countless amount of men in the world. Jamaican Black Stone is a natural product. 100% organic.