1) Besides having the function of contraception while combined with condom,this vibrating ring  also Can boost the pleasure on love making.
2) Special dot touched female's sensitive G spot inside of clitoris which bring orgasm on lovemaking
3) This vibrating ring was designed with safe low direct  current.  it's frequency reaches to 10,500-11,000 times per minutes which also saves energy for man
4) Battery can last for 25-35 minutes. It helps extending  foreplay pleasure while lovemaking
5) Two different sizes can be fitted for Asian and Western male's organs-without any embarrassed problem