To use this Calexotics Gem - Inlaid Power Probe, first make sure it's fully charged. Press the gem inlay control button to start and cycle through the 10 vibration functions. Apply some water - based lubricant for a more comfortable insertion. When using, start slowly and gradually increase the intensity according to your preference. After use, turn it off and clean it with warm water and mild soap. Since it's waterproof, you can even use it in the bath or shower. Keep it in a cool and dry place when not in use. Don't use sharp objects on it to avoid damaging the silicone. And always use it with consent and in a safe and private environment.