Solstice is an anal vibrator designed for men, as it is an excellent prostate massager. its ergonomic and undulating design provides precise and intense stimulation. it is made of soft and velvety high quality silicone. its rounded tip shape makes insertion easy and has a large suction cup base, so you can keep your hands free and be sure the vibrator is well attached to the surface. water and is magnetically charged via usb. the powerful solstice engine offers 7 different vibration modes that can be controlled from the whats sense app. also, the toy vibrates to the rhythm of the music by controlling your voice with original patterns or custom patterns for you. you can use it with the application and with the independent mode (everything is listed in the user manual to download the application and use it in the basic mode). with the charged battery solstice provides up to 120 minutes of pleasure without interruptions