Transparent, length-adjustable penis pump with penis rings and charging cable. Grows with you: Easy to adjust in size. Use: Can make erections even harder. 2 powerful motors: 3 suction modes, 5 vibration modes. Visible: The transparent vacuum cylinder shows you exactly how hard your penis is already erect. Safe: If you have created too much negative pressure, you have a safety button that releases you immediately. Product information: How do I use the penis pump "Extender Pro Vibrating Pump"? The Extender Pro Vibrating Pump penis pump can stimulate you intensively and train your erection. Adjust the penis pump to your size and simply place the pump cylinder on your penis. If you like, you can then lubricate your penis with some lubricant for an authentic effect. Then you can switch on the powerful motors of the penis pump Extender Pro Vibrating Pump and enjoy. You can choose between three powerful suction modes and five exciting vibration modes that work your penis through the narrow opening. You can closely monitor the size of the resulting erection in the transparent pump cylinder. If you ever overdo it with the potency vacuum, you can switch it off immediately using the safety button. What is special about the Extender Pro Vibrating Pump penis pump? The Extender Pro Vibrating Pump penis pump adjusts itself precisely to your size so that you can enjoy all the benefits of this high-performance pump.