... replace the traditional string lights very well ,because it is so soft .we can put them on the chrtistmas tree ,on day ... in night ,when we trun on the lights ,it is so shining .and this products is very new to the decoration ... light 2). Voltage: 3V, 4.5V, 6V, 12V, 24V and so on. 3). Bulb distance: 3cm,5.6cm, 10cm, 11.2cm ...