With an automatic, rhythmic pump function for fulfilling pleasure and training the muscles! Vibro-ball duo love balls from rc + inflatable with a pronounced, stimulating texture and a retrieval strap. the ball at the end can be inflated so that it is very large – for an amazing full feeling. it is also great for training the muscles effectively. the vibrations (7 modes), pump function and air release function can be controlled separately using the button on the remote control. once the vibrations are turned on, the vibrator inflates and deflates automatically in various pulsating rhythms for a very realistic feeling. the vibro-balls are very quiet which means that they can be worn discreetly whenever and wherever. the vibro-ball duo are covered in soft silicone which feels great against the skin and when they're being worn. it can be recharged with the included usb cable. includes a battery (cr2032) for the remote control. complete length 18.5 cm, insertion length 11.5 cm. ø max. 4.2 cm – it can be inflated up to ø 5.7 cm. weight 98 g. silicone, pu, abs.