work in 9-12Volts

Do not need add any resistor, it can work in 9-12Volts directly
Specifications :

-Size: T1 Round (waterclear) LED or 3mm Round (waterclear) LED
Brightness: 10,000-12,000MCD
-Emitting color:White.
-Color temperture: 6000-6500K
-Forward voltage:9V~12VDC Compatible.
-Forward current Typical: 15mA or below; Max: 20mA
-Viewing angle: 25-35 Degree-

Applications & Installations
Ideal for 9-12V LED replacement for computers, radio, dashboards, or any battery or power supply that the voltage in 9-12V ¡­.etc.
Very low power consumption, and high luminous intensity
Recommended voltage is 12V
Package included :
50pcs T1 Round (waterclear) LED or 3mm Round (waterclear) LED(White)
Search "bowerful " for more related leds;