1) Unique Design - Segment LED Countdown Timer Design 2) 2 Digits - Displays from 1-99 3) Colors Optional - 1 Color Red or 3 Colors Red, Yellow & Green optional 4) Robust Design - Shock and vibration resistant 5) Light Beam - Low heat generated/No UV, adopted the integrative lamp cup & radiator, scatter heat quickly 6) IP65 High grade water proof function design 7) Related Approvals - Produced according to Chinese GB14887-2003 standards and related international standards.