Diamo is a Bluetooth remote-controlled, comfortable-to-wear vibrating cock ring that promotes a harder, longer-lasting erection and increases sexual stamina. Diamo is perfect for solo play, discreet public play, sex and remote control. Stretchable silicone, ring diameter 4.45 cm, waterproof, rechargeable by USB with magnetic contacts, 3 constant vibration levels, save in Diamo up to 10 patterns of your own creations of vibrations.