These side-pin G4 LED bulbs easily replace power-hungry 10W or 20W halogen bulbs on your boat or RV, and fit even the slimmest overhead downlight fixtures. They can operate on 12V AC or DC, or 24VDC. Thanks to their constant-current circuitry, they are not only multi-voltage capable, but this also allows them maximize the output and color temperature of the 10 high-output LEDs. You won't be disappointed with the output of these bi-pin G4 LED bulbs. There are none brighter or longer lasting in this form-factor. These bulbs can operate fine on reversed polarity, and also have a built-in PTCC thermal-foldback fuse and a Transient Voltage Suppressor to prevent damage from overcurrent, voltage spikes, or over-heating. They are also dimmable on DC PWM dimmers of the type commonly found on many boats and RVs. 100% Satisfaction Guaranteed. Specifications: LEDs: (10) 2835 emitters Input Voltage: 10 - 30VDC (Integrated Constant Current IC) Wattage: 2 Watts Amperage: 0.17A at 12VDC Beam Angle: 120° Color Temperature: 2,900°K (Warm White), 6,000°K (Cool White) Output: 150 Lumens WW, 155 Lumens CW Base Type: G4 Bi-Pin, 4mm spacing, 0.7mm pins Dimensions: ø30mm x 8.5mm face x 31mm overall Dimmable: Yes - with PWM Dimmer Lifetime 30,000 hours 2 Year Warranty Technical Specifications Base / socket G4 Voltage 12V Power 10 W Light output 150 lumens Color Warm White Multi-volt LED electronics are polarity-protected and built for the marine 12/24 V DC environment. Not sure this is the right base or fixture for your boat? Contact us with a photo of your old bulb or fixture and we'll confirm fit.