The Satisfyer Men Heat features an innovative warming function that is designed to feel very realistic. The motor provides 10 functions, 7 speeds, and an amazing adjustable warming feature that feels like a hot body. You don't have to be erect to enjoy these realistic pleasures. At 5.5 inches long, 2 inches wide, 2.5 inches deep, this Satisfyer is ergonomically designed to take you as you are –– perfect for couples foreplay, solo "edging" or self-pleasuring sessions –– whatever you're up for. It fits nicely in your hand as the mechanisms and heater inside do all the work. You can adjust the warming function using 3 levels up to 104 degrees. The controls are simple and intuitive. Press the power button to turn on the unit, then press it again for 10 functions. Above the power button is a Plus (+) and a Minus (-) button to regulate the speed/intensity of each function. And at the top is a thermometer-shaped button to turn on the warmth: your choice of 3 levels. The Satisfyer Men Heat is 100% waterproof so you can bring into the shower or tub for a satisfying experience, then add some mild soap for a quick clean up.