Cordless Ultrasonic activator, give you a different experience in root canal activating. Features: - Frequency:45Khz. - Variable frequency control, self-adjusting frequency in treatment. - 2 range working power. - Only 95 Gr, Light in weight. - Powerful battery:1500mAh,4.5 hours continuous operation. - Option to direct plug-in charging wire when zero power. - Warranty: 1 Year.