Made with durable metal clips and covered in super soft rubber liners for exceptional comfort. these clamps are perfect for beginners and fetish enthusiasts alike. Choose the desired tension by adjusting the stem screws until they are snug. Press the power button to turn the unit on. then press the waves button to cycle through 10 patterns of pulsation. vibration. and escalation. Try it with the included satin mask to heighten your senses even more. Vibrating nipple clamps require 2 AAA batteries. not included.