Ceramic bearings offer longer turbine life, reduced noise, and less vibration. Twin turbines with 36 impeller blades produce up to 22 watts of power and optimal torque. ‘‘Zero drawback’’ system provides excellent contamination control. Ceramic surface treatment for superior grip and durability. Advanced fluid dynamics enable quiet operation. Ideal angulation of 15° for greater visibility. Durable and easy to operate with push-button chuck. 2-year warranty on Fiber-Optic, 1-1/2-year warranty on Non-Optic.