The Crystal Duo Smart Kegel Vibrator and Weight set by Magic Motion brings you unlimited pleasure with its interactive remote control and sensual muscle training. This pelvic floor trainer is designed to massage, tighten, strengthen and stimulate the Kegel muscles, so that sensual and orgasmic gratification is guaranteed. The APP control encourages stimulating and exciting partner participation but can be used without the APP control as well. Weight of the smart dual ball is 80g and the single ball is 42g. This Kegel vibrator is Magic Motion App connectable, which is available free from most app stores and includes a free Kegel training course. The easy to remove crystal ball makes for easy cleaning and the USB Rechargeable design is beginner-friendly and convenient for anyone who is looking to strengthen their pelvic floor muscles.