1) Adjustable Power Mode : Low power and high power modes are now selectable. Laser's default power mode is low power mode.2) Adjustable Wave Mode : Pulse mode and constant wave modes are now selectable. Laser's default wave mode is pulse mode.3) Secure Lock/Unlock Mode : The laser can now be locked and unlocked electronically to prevent unauthorized usage. Laser's default secure mode is locked mode.4) Training Lens : A replaceable training lens will be installed on each laser that reduces the power output by 80% to prevent accidents for new users. Once training is completed, user may replace the training lens with the included standard lens for maximum power.