The innovation of the sex toys for couples lies in its unique, intuitive control interface.By simply touching the device to your finger, you can control the intensity of vibration and choose from five different modes:Pulse - A steady vibration that increases with each touchBurst - A quick burst of vibration followed by a pause before starting againTease - A slower build-up before peaking at maximum powerWave - The vibrations increase in intensity as you hold it longer; release to decrease power or shake for a random pattern!