Luminous matarial absorbs short wave lights such as blue,violet ultra violet. Some venue lighting systems do not, however, contain these light waves that Luminlay depends upon for charging. In such cases, the Luminlay light charger (which can be easily kept in a pocket) can be used to charge each position marker within a few seconds. If you put it into your pocket, you can charge lights on stage.　This light charger features a super-bright blue LED with a rugged metal casing. * *Please purchase batteries, 4 of LR-41 (AG-3) by yourself. * To avoid any risk concerning potentially harmful light waves, avoid shining the Luminlay light charger directly into your eyes., Q&A Q:Does LL-1n need batteries? If so, what kind of batteries? A: Yes, it comes without batteries. You have to purchase 4 x AG3 (LR-41) button battery by yourself. When light becomes weaker, replace with new ones.
