Sandwox SX655 Random-orbit Electric Sander is built for easy sanding with one hand, a combination of compact size and ergonomic comfort. A 400W brushless motor delivers consistent power at speeds from 4,000 to 10,000 RPM. This motor requires lower power consumption and generates less heat vs. brushed motors, so it doesn't require added venting and won't accumulate as much dust inside the machine. It is suitable for pre-sanding for polishing to coarse and intermediate sanding on varnish, primer, filler or wood. The New Generation Powerful and Reliable Brushless Sander Enlarge Start/stop switch Enlarged start/stop switch enables the most comfortable control under any working conditions. 11 Level Speed Adjustment Roller type speed regulation, simple operation, smoother speed regulation, speed range from 4000 to 1000rpm. 11 level speed adjustment design, matching the best working speed various working conditions. Powerful Brushless Motor A new generation of high-power brushless motors with longer life and stronger performance, withstanding over 3000 hours durability test. Multiple Protection Suitable for Complex Working Conditions Switch protection, circuit board sealing protection, motor sealing protection, wind blade sealing protection, designed for various complex working conditions. Techical Detail Connect Load 220-240V / 50-60Hz / 16A Power Input (W) 400W Min Speed(rpm) 4000 rpm Max Speed(rpm) 10000 rpm Orbit 3mm Dust System Central Vacuum Protection Class II Vibration Average 83 dB Weight 1.3 KG