The Trojan Duo Vibrating Ring is designed to enhance the pleasure of both partners with twice the intimate vibrations. Safely powered by a small battery enclosed in a soft casing. Raised dot adds increased pleasure and vibrations last up to 20 minutes. Trojan Vibrating Ring should only be used once and should be disposed after use. Instructions for use: Put ring on erect penis with vibrator on top side and protruding bump facing forward. Position the ring on the base of the penis. To activate vibration, carefully press the on/off switch inward. The switch is located on the side of the vibrator. Vibration will last about 20 minutes or until the self contained battery is exhausted. To stop vibration, carefully pull on/off switch outward until vibration stops. Vibrating cock ring is made using phthalate free, non-toxic materials Thermoplastic Rubber TPR. Thermoplastic Rubber TPR is a class of polymers, the characteristics of which mimic many of those of Silicone hygienic, soft, pliable, durable, non-porous. Safe and pure phthalate free as well as recyclable. A water based lubricant is recommended. May be used with or without a condom. Includes 1 Trojan premium latex condom A condom is a barrier device most commonly used during sexual intercourse to reduce the probability of pregnancy and spreading sexually transmitted diseases, STDs such as gonorrhea, syphilis, and HIV. It is put on a man’s erect penis and physically blocks ejaculated semen from entering the body of a sexual partner. Because condoms are waterproof, elastic, and durable, they are also used in a variety of secondary applications. These include collection of semen for use in infertility treatment as well as non-sexual uses such as creating waterproof microphones and protecting rifle barrels from clogging. Safe sex practice, birth control, disease prevention, pregnancy prevent. Always practice safe sex.