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1. Data sourced from a third-party laboratory. Under the rated voltage and frequency, the hair dryers were set to Cold on the highest airspeed without any attachments. Laifen's high-speed brushless motor reached speeds of 110,000 RPM (Laifen Swift / Laifen Swift Special), 105,000 RPM (Laifen SE), and 100,000 RPM (Laifen SE Lite). Report Number: CVC - WTS2023-23761 (Laifen Swift / Laifen Swift Spcial), CVC - WTS2022-19999 (Laifen SE), and CVC - WTS2023-23761 (Laifen SE Lite).
2. Data sourced from a third-party laboratory. Under the rated voltage and frequency, the hair dryers were set to Cold on the highest airspeed without any attachments, with an airspeed tester placed directly at the air outlet. The airspeeds were measured to be 22m/s (Laifen Swift / Laifen Swift Spcial), 21m/s (Laifen SE), and 19m/s (Laifen SE Lite). Report Numbers: CHTC - WCK-22-50154 (Laifen Swift / Laifen Swift Spcial), CVC - WTS2022-20002 (Laifen SE), CVC - WTS2023-23760-1 (Laifen SE Lite).
3. 3-5. Drying Times: Drying time estimates (1 minute, 3 minutes, 5 minutes) are based on internal tests involving 120 users. Actual results may vary by individual and environmental conditions.
4. 6-8.Data sourced from internal testing.
5. Data sourced from a third-party laboratory (Laifen Swift / Laifen Swift Spcial) and internal testing (Laifen SE, Laifen SE Lite). Under the rated voltage and frequency, the hair dryers were set to Cold on the highest airspeed without any attachments and placed 10cm from the tester. The highest concentrations were measured to be 200 million/cm³ (Laifen Swift / Laifen Swift Spcial, Laifen SE,) and 150 million/cm³ (Laifen SE Lite). Report Numbers: CVC - WTS2022-21717 (Laifen Swift / Laifen Swift Spcial).
6. Data sourced from internal testing. The hair dryers' Smart Temperature Control includes a built-in microprocessor that precisely calibrates the air temperature 100 times per second (Laifen Swift / Laifen Swift Spcial, ), or 50 times per second (Laifen SE/ Laifen SE Lite). Software Copyright Registration Number: 2022SR0209128.
7. 62dB Six-Level Noise Reduction: The data is sourced from a third-party laboratory. Under rated voltage and frequency, the Laifen High-Speed Hair Dryer SE Lite was set to operate with cold air and at the highest wind speed level without any attachments. The measured average sound pressure level in decibels was recorded at a horizontal distance of 100 cm from the microphone. Report number: Vkan WTS2023-23763-1.