Hello. As is, you have to hold the button down for these lights to stay lit. Pressing the battery holder down is what completes the circuit; otherwise the circuit remains incomplete. I put three cards with these lights through the regular mail and all three arrived with lights still working and plenty of battery, in part because the circuit stays incomplete without the pressure. Alternatively, there is a reed switch that is sold separately that can be added to hold the circuit open. Hope that helps!
By: Shell770
(14-Jan-24)
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