User Manual Q&AAnswer
Dec 20, 2024 - 03:13 AM
To power on the Smart4u SH50U Bicycle Helmet Rear Light, hold the button at the back of the helmet for 2 seconds. The LED taillight will blink for 10 seconds, indicating that the helmet has powered on. To power off the helmet, hold the button at the back of the helmet for 2 seconds until all the LED taillights turn off.
Reference: "Wearing Instructions" section of the Smart4u SH50U Bicycle Helmet Rear Light User Manual.
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