This electro probe achieves an impressive 12,000 RPM in both vibration and electroshock modes and is extremely quiet at less than 50 dB. The remote control uses a single AAA battery (included). The toy is made from super-soft, phthalate-free medical-grade silicone and measures a total of 29.5 cm. The insertable length is 19.5 cm, and the diameter varies between 5 mm and 7 mm. Always use a generous amount of sterile water-based lubricant and insert slowly and gradually for maximum pleasure. Do not use E-Stim with a heart condition or pacemaker without prior medical advice. Do not use E-Stim during pregnancy. Do not use E-Stim in conjunction with flammable objects or liquids.