Ortur 15 watt Laser Master. While this is listed as a 15 watt, that is the total power. The laser actually functions at a 4.5ish watt power, similar to my J Tech 4.2 Watt Laser. This laser is perfect for a beginner and expert. It's open frame allows it to be used almost anywhere! Ortur Laser Master is a portable laser engraving machine, which is easy to install and safe to operate. It has a built-in G-sensor. When the machine tilts, it will automatically stop laser work and protect against laser damage. Support for GRBL open source software for operating fun. It supports dynamic control laser module, and PWM power regulation, low brightness regulation.