Experience 2 ways to intensify your erection with 1 genius stoker! The PDX ELITE Suck-N-Pump Stroker features a medical-style pump ball that functions as an erection pump in one position and as a masturbation stroker in a second position – double the performance options of an ordinary pump!Customize your pleasure!PENIS PUMP – With each squeeze of the medical-style pump ball in the PUMP position a super-strong vacuum is created inside the chamber, forcing your erection to quickly expand its length and girth.MASTURBATION STROKER – When the pump ball is placed in the STROKER position your shaft is surrounded by super-tight oral sex suction. Twist the top dial to activate powerful multi-speed vibrations for additional stimulation.The soft TPR sleeve forms an air-tight seal against your skin, creating incredible suction and amazing results, while the crystal-clear tube is designed for a firm grip and has a convenient ruler to gauge your expansive growth. You can instantly relieve pressure by pressing the air release valve above the pump cylinder. Conveniently waterproof for fun in the bath or shower.Enjoy the Best of Both Worlds – Oral Sex Sensations + a Bigger, Harder Erection!MULTI-SPEED VIBRATION – Simply twist the dial to enjoy extra stimulation.POWERFUL VIBRATION – Multi-speed vibration heightens your experience.QUICK RELEASE BUTTON – Press to instantly relieve pressure.RULER-LINED CLEAR CYLINDER – View visible results.SATISFYING MASTURBATION STROKER – Intense oral sex sensations elevate every masturbation session. STIMULATING SLEEVE – The flexible TPR sleeve is lined with soft nubs and ribs to excite your senses. AIR-TIGHT SEAL – Design ensures extra-strong suction.MEDICAL-STYLE PUMP BALL – Conveniently functions as both a pump and a stroker.Operating Instructions: PENIS PUMP – Place the end of the pump ball labeled PUMP on the end of the flexible tube.MASTURBATION STROKER – Place the end of the pump ball labeled STROKER on the end of the flexible tube. Press the QUICK RELEASE BUTTON to instantly relieve pressure. To prolong ejaculation, slide one of the included Silicone Designer C-Ring’s over your shaft until it’s nice and snug. The tight squeeze will help maintain your erection and extend the fun.