This advanced, waterproof pump is crafted for ease and accuracy, featuring 4 adjustable speed and mode settings for personalized suction control that will drive you wild while you pump yourself up! What does this mean for you? Uninterrupted performance tailored to your specific needs. The LED pressure gauge stands out with its colorful, user-friendly design, ensuring that pressure levels are always within your sight. For added convenience, the detachable graduated cylinder is simple to maintain and provides exact measurements to track your progress as it happens. Combined with a premium silicone sleeve that offers both a secure seal and maximum comfort, and a durable transparent build, you’re guaranteed an extraordinary experience designed to give you pleasure and satisfaction! Whether enjoying your solo pumping sessions or gearing up for the big event, you can rely on your pump to deliver! Measurements: Cylinder: 12.1 inches total length, 8.7 inches inner length, 2.4 inches inner diameter, 3.1 inches outer diameter Silicone sleeve: 1.2 inches opening diameter (unstretched) Materials: Cylinder: Plastic Sleeve: Silicone Color: Black, clear Note: Use only with water-based lubricants for best results.