... saving 4.Long servicing lifetime 5mm Luminous Diode Light Emitting DiodeSepcification:All kinds of LED lamp diode, including all ... round led, oval led, straw hat led , helmet led , square led flat top led , bullet led, concave led, rectangle led 3 Available Size; 2mm,3mm,5mm,8mm, ... 3. Digital display and DOT matrix display 4. SMD LED 5. LED backlight 6. Infrared IR & photodiodeOur solemn promises: 1 ...