Precision and high-performance are the two most important features in the Shimano Catana FC Spinning Reel. With a durable, lightweight XT7 body and an aluminum spool, heaviness is not a factor when using this spinning reel. The Catana increased sensitivity and reduced wobble comes from Dyna-Balance technology that balances the rotor just right. Get longer, smoother casts with the Propulsion Management System - it reduces overall 'line-slap' friction. Power Roller bearings, along with Super Stopper II uses one-way roller bearing to get rid of any back play work together to ensure the reel keeps going and stopping at your command. Shimano's Varispeed promises constant spool speed and less line slack.