FUNCTIONALITY: - Fast work (high speed) The highest speed can reach 10000r/min, metal cutting more powerful. - Long endurance (large rate electric core) Ultra super motor, low power consumption and high conversion; large rate electric core + TPM heat management system, discharge more durable, comprehensive range increased by 15%. - Excellent quality (intelligent safety algorithm) Big computing power chip + 8 kinds of intelligent security algorithms, Deli quality whole process monitoring and production, Deli laboratory assessment, quality is reliable.