【One-Click Pause Function & Transparent Window】The One-Click Pause function can improve your intercourse stamina. When you feel that you are 90% of the way to reach ejaculation, stop and wait for the 30s (until the feeling of ejaculation goes away), then you can continue. This repeated exercise, Makes you longer, harder, and stronger. It also provides a window to view the action at various speeds, strokes, and pulses. You can see that the springs in its structure keep you tight all the way through.