ARK's Z-Spoon's smooth vibration gently "wakes up" the mouth, increases awareness, and provides oral motor stimulation to the lips, tongue, cheeks, and jaw. A wonderful tool for any sensory mealtime treatment plan.The Z-Spoon is sold with 1 vibratory handle, 1 Spoon Tip, and 1 Switch Tip. The texture around the handle provides a slip-proof grip, and it can also be brushed along the cheeks, arms, hands, etc. for additional tactile input. Turn the unit on by twisting the Switch Tip *just* until the unit starts to vibrate.