Advanced technology! Totally self-contained probes with intense vibrations that resonate throughout. Smooth, soft, unscented, and pliable. 10 powerful functions of vibration, pulsation, and escalation. Ergonomic flanged base designed for comfort. TPR (probe) ABS with PU Cote (base). 2 AAA batteries. 3.25"x 1.25"/ 8 cm x 3 cm (probe). 4.25"x 3.25"/ 11 cm x 8 cm (overall).