Buyers should prioritize the laser output power (typically 30W to 60W) for versatile surgical applications and the wavelength (10.6μm) for optimal soft tissue absorption. Ensure the device features a high-quality articulated arm (7-joint spring-balanced) to provide maximum flexibility and precision during procedures. Additionally, verify the availability of multiple operating modes such as Continuous, Pulse, and Ultra-pulse to cater to different clinical needs like dermatology, ENT, or gynecology.