Battery life: about 10 hours for 1st gear, 4.5 hours for 2nd gear, 2.5 hours for 3rd fan. Fan function Rated power: 1.2-5W. Press the switch once to start the 1st gear, press the second switch to start the 2nd gear, press the third switch to start the 3rd gear, and press the fourth switch to turn off the power.
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