Lunatik, the design company headed by Nike watch designer Scott Wilson, and known for its iPod nano watchbands, has launched a preview of its Lynk smart watch collection. Four smartwatches are included: Lynk, Lynk Pulse, Lynk Vapor, and Lynk Extreme. Lynk Pulse appears to be a heart-sensing version of the Lynk smart watch. Lynk Vapor is a more streamlined band-style watch, while Lynk Extreme is a more heavy-duty model. No pricing or release information…