The Cal Exotics Silicone O Probe is a luxurious silicone universal massager. The push button 3-speed removable stimulator offers intense vibrations. The O Probe also features an easy pull handle. Made of silicone (massager) ABS (stimulator) ABS with silver plating (cap). Requires 1 AAA battery. 4.25â x 1.5â (massager). 2.75â x 0.75â (stimulator).