From zero to full charge, over three hours of charging,
Use for 1.5 hours. Another thing is, five minutes at a time, the whole fuselage starts to get hot.
The RF beauty instrument is used wirelessly, and the battery life is about 1h, that is, it can be used about 6-10 times on a charge.
Usually two or three hours.
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The switch key is on the back, and the front is the light change key, brightness, dimming, and mode light in turn. Long press to adjust the light\/dark can quickly reach the brightest or darkest, and press several times to gradually adjust the light\/dark by the gear.