Speed Level: 1-100 Speeds, Rotation Speed: MAX 13000RPM, Wind Speeds: MAX 25ft/s Refrigeration & Cold Compress: Lower the temperature to 53-59℉(Lab measurement data) Battery Capacity: 5200mAh, Running Hours: 3.5-20Hrs Visual Digital Display: Display the remaining battery life and speed level Pocket Size: 2.3x6.1inch, Weight: 7.47oz Noise level: 1st gear-49dB, 25 gear-54dB, 50 gear-57dB, 75 gear-61dB, 100 gear-65dB
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