The Silhouette S17 is an ergonomically curvedbody forming premium Silicone massager. Features dual motors with 10 incredible functions of vibrationpulsationand escalation. Intense incremental speed control allows you to find the perfect speed for you or your partner. USB rechargeableincludes charging cord. Completely charges in 2 hours. Massager will run on highest speed for 40 minutes and on lowest speed for 2 hours. Shaft measures 4.5 inches by 1.25 inches. Stimulator measures 2.5 inches by 1.25 inches.