Using the Satisfyer Bullseye Cock Ring Vibrator is easy. First, adjust the slider to get the right tightness for a comfortable fit. Then, turn it on and choose from the 12 vibration modes through the app. You can even create your own preset programs for a personalized experience. For aquatic fun, you can use it in the bath or shower as it's waterproof. When you're done, clean it with mild soap and water. Make sure to dry it thoroughly before storing. Always use it in a safe and comfortable environment. Keep it away from sharp objects to avoid damage. Charge it using the included USB magnetic charging cable when the battery runs low. Enjoy your new Satisfyer Bullseye Cock Ring Vibrator!