Material: Acrylic · Silicone · ABS Safety: Electric air release valve · Air pressure gauge Noise Factor: Quiet Features: Digital display · silicone sleeve  · timer Battery: Rechargeable Functions: 5 preset power settings · smart-tech exercises Waterproof: No Best for: Improved Size  · Stamina  · ED Lubricant type: Water-based only Max Insertable Length: 7.5 in. Cylinder Length: 8 in. Overall Width: 2.5 in.   When you’re in the mood and ready to go, waiting is just not an option.  That’s why the Overdrive by Lynk Pleasure has an airtight seal and five powerful preset workout settings. That way, you can get a rock-hard erection the moment you need it. Built to last, The Overdrive contains the best material and components available to ensure that you stop pumping when you are ready, not when the pump is.  The flame-polished acrylic cylinder measures 8 inches long and a solid 2.5 inches wide.  The perfect size for most sized men.  Combine the silicone comfort sleeve, anti-air leak technology, and electric quick-release valve, and what you get is the safest and most effective pump available. Preset Vacuum Settings -15 kPa (4.42 Hg) -20 kPa (5.9 Hg) -25 kPa (7.38 Hg) -30 kPa (8.85 Hg) -35 kPa (10 Hg)