Soft, power-packed stud flexes and bends for multi-directional positioning with 3 intense speeds and easy push button control. Uses 2 AA not included. Materials: Phthalate-Free PVC (vibrator) ABS and ABS with PU Cote (cap) ABS with Silver Plating (decor). Dimensions: 6.5" x 1.5"/16.5 cm x 3.75 cm.