Adopts a LED which can emit 15 different shades of brilliant light. Powered by batteries ; can be reused by replacing the batteries, making it more environmentally friendly than most glow sticks be spoilt for with 15 individual colors, or turn to color changing mode to match the mood in bars or at live concerts Visible range of over 500 m on a clear night.Made of PP and ABS material, no smell, safe to use, widely used at vocal concerts, party, celebration, opening ceremony, wedding, to create atmosphere. colour:white material:ABS+PP size:25*3CM Package Contents: 2* Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.