Silicone encapsulation, mini LED bulbs.
Marine lights, boat lights,Offset Pin. 

Description:
Base:        BAY15D 
LED Type : COB 1511 LEDs
Input:         DC 12V
Power:       2.8W
Luminous: 220 LM
Angle:        360°
Color:        White(5500-6000K)/Warm White(3000-3500K)
Life time: more than 30,000 hours
This bulb has two offset opposing pins

No eletrical contact on base. (+)(-) on bottom contacts - will work with either polarity.

The package includes: 
50pcs BAY15D LED Bulbs