This is the one I get the most questions about, mostly because WaveMotion is hard to describe until you've felt it — it's a rolling, pressing motion rather than a buzz.

A clinical note worth saying plainly: use a water-based lubricant with this one, not silicone-based. Silicone lube degrades silicone devices over time. And body-safe silicone genuinely matters — it's non-porous, which is what makes it properly cleanable.