Sig Sauer #8/#8 Tritium Night Sight Set When the lights go out, your sidearm doesn't need to be left in the dark. Tritium night sights transition from standard white dot sights during the daylight, to glowing green dots in the the dark. Tritium does not need batteries and does not need to be charged with light - it simply glows! Product Specs: Traditional tritium night sightsUses the brightest tritium availableCNC-machined steel constructionGreen front and rearFits standard holstersSnag-resistant design