The Ninja 1 is an innovative male masturbator, designed with pure pleasure in mind. What really makes this toy stand out is the heating function. As if that wasn't enough, this penis stroking toy also features a vibration mode to really crank up the pleasure. Its flexible silicone tongue will roll along with the vibration, as you flip through 8 vibration modes. 8 Vibration speeds Self-heating Smooth silicone inside 2 heating levels Fluttering tongue Faceted shell exterior Silicone interior Splashproof IPX6 USB rechargeable Charging cable included Dimensions: Length: 4.72 inches total, Mouth width: 1.38 inches, slightly flexible