thus indicating and communicating the relative conditional state of the non included unit elastic forces table a create contact friction between invention surfaces included and application surfaces non included enabling the slider to hold its relative position on the band when contacting a non included unit elasticity pulls the slider and band against the non included unit keeping the band and slider on the application and aiding slider position retention the invention 39 s included frictional features and band protuberances fig1 band with protuberances retain the slider over the chosen indicia when band elasticity does not force band and slider contact onto the application fig1 invention on wrist the slider fig6 slider front face has grip surfaces fig6 b for grasping and pulling the slider along the band thus the band slides through the slider retention slots fig7 a when required a serpentine arrangement fig8 a creates greater frictional force between the band and the slider 39 s pinch plate fig6 a 3b and 4a band protuberances are added fig1 to assist in slider retention over the chosen indicia and also reduce band slippage when contacting the non included unit the band and slider invention can be configured as a mechanical form or a mechanical electronic form design characteristics are added as the band and slider morphs from mechanical to mechanical electronic fig3 mechanical and electronic.