Features Adopts High-Functional Brushless Motor, marvelous lifespan and strong durability to repair and maintenance almost needless. Smaller size, light weight, low noise-pollution, fashionable design, high stability and easy operation motor which gives the benefit of longer working-time. (3 years warranty on motor) Brushless Motor has more stable torque output；It is best to fit for operating in clean-room circumstance and no worry of pollution will be arisen. Best tool to assemble watch, laptop, digital camera, DVD player, Cell phone, Communication equipment and high tech products which need to be assembled in clean-room. CE and ETL are optional