electric plug Features: Material:Silicone Color:Black Weight: 134g Max diameter: 10cm Battery: 2*AAA batteries (not included) Frequency: 10 Speed Include:1 pcs inflatable plug Package:Discreet package,protect your privacy Feature: Made of high quality silicone material,Skin-friendly and odorless, smooth and comfortable touch, soft and flexible, waterproof and anti-creeping, all encapsulated and safer to clean; Inflate to adjust size any time,shrink and expand,Suitable all kind of sex player; 10 Speed strong vibration, enjoy the thrill of vibration while being stuffed, climax to tremble; manual plug Features: High quality silicone, can expand to 10cm. Dont be out of shape after deflating. Turn valve can adjust deflation speeds. Adjust size any time, can try different feeling that transform between deflating and inflating. Great afford ability, do not easy blast within safe diameter. Make your feeling hollowed out,a special experience. High-quality silicone material, odorless, non-toxic, harmless. Size can be changed by air inflation in hand. Item Description Material: Silicone Color : Black Include: 1pcs inflatable plug Package : Discreet package , protect your privacy Usage: Unscrew the button counter clockwise to deflate it. Turn clockwise and tighten as you inflate. For vibration, push top button to switch on or off, push botton button to adjsut vibration frequency. The maximum safety diameter of the ball cannot exceed 10cm.Suggest to experience with lubricants. When starting to inflate, it is normal to deform due to airflow.