I tried to follow the instructions on the website here as there are no instructions in the box. All they do is light up and disappear, then light up again and disappear. (In the dark or in the light - they're supposed to be light/vibration sensitive). No long or short press on the button on the back does anything. Don't waste money. One charged in 15 minutes, the other has been charging for an hour and still not fully charged. I really tried all the ways to press the button on the back and NOTHING. Just disappear and disappear. Pure garbage. Sending it back Update: No response from the company that sold it to me. One is already dead. The other is unpredictable, fading and fading or blinking.
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