The SmartLite Focus' homogeneous beam profile makes it less sensitive to movement during the curing cycle and provides consistent curing performance across the restorative surface. The result is uniform curing performance within the curing area. Designed to Stay on top. With a lightweight (90g), 330 head rotation and pen-style design you'll experience excellent intra-oral control that'll help you maintain a steady hand at the proper angle. Smarter than the average light. Using Smart Recharge Technology, the SmartLite Focus automatically adjusts to Auto-Quick Charge, Standard Charge, or Standby Mode based on battery conditions.