Are these suitable for outdoor landscape lighting use?

I use them in a waterproof housing under water in a water feature in our back deck. I think general outdoor use would depend more on the housing than on the bulb itself.

It is an incandescent bulb, so yes, it should be dimmable.

Can this be used in my lava lamp? next to where the bulb is inserted it says to use g4 120v 35w type bulbs. thanks in advance.

No. The Vstar bulb is 12 Volts not 120 volt. Check that the base of a replacement bulb is the same base as the original in the lava lamp.

Does anyone know the kelvin on these? are they bright white or horrible yellow?

Sorry, no idea what the Kelvin rating might be but the light they give off is bright white.

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G4 12V 20W Bulb T3 JC Type Bi-Pin Base G4 Chandeliers,Clear,10 Packs | Span life 2000 hours,G4 Bi-Pin base (4mm pin spacing),Smooth dimming from 0% to 100%,no flickering

Product ID: 88637500

Details

Brand
VSTAR
Bulb Shape Size
JC
Light Type
Halogen
Special Feature
G4 Halogen 20
Wattage
20 watts

⚡12V low voltage power

💡20W bright halogen output

🔩4mm precise bi-pin base spacing

$15.23

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Description

💡 Light up your world with precision and style—because your space deserves the best!

BRILLIANT WARM GLOW - 20W halogen bulbs deliver a cozy 2500K light temperature with 350 lumens, perfect for creating inviting atmospheres in any space.
BULK PACK CONVENIENCE - 10-pack bundle keeps you stocked and ready, so you never run out of that crisp, clear light your space deserves.
EFFORTLESS PLUG PLAY - Standard G4 bi-pin base with exact 4mm pin spacing ensures seamless installation in your favorite fixtures.
LONG LASTING PERFORMANCE - Up to 2,000 hours of reliable illumination means fewer replacements and more uninterrupted productivity or relaxation.
VERSATILE AMBIANCE UPGRADE - Ideal for home, office, restaurants, and retail environments—elevate your lighting game across all your favorite spots.

The Vstar G4 12V 20W JC Type Bi-Pin Halogen Bulb offers a clear, warm 2500K light with 350 lumens output. Featuring a precise 4mm G4 bi-pin base, these bulbs provide easy installation and long-lasting performance of approximately 2,000 hours. Perfectly suited for indoor use in homes, offices, restaurants, and stores, this 10-pack ensures you stay illuminated with reliable, energy-efficient halogen lighting.

Specifications

ASIN	B01K4CNVYU
Accepted Voltage Frequency	100 to 120 Volts and 50 Hertz
Additional Features	G4 Halogen Light Bulb 20 Watt Bi-Pin Halogen Light Bulb, 12 Volt, G4 Base, JC Type Bulb
Best Sellers Rank	#7,373 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #43 in Halogen Bulbs
Brand Name	VSTAR
Bulb Base	G4
Bulb Diameter	0.31 Inches
Bulb Shape Size	JC
Color	20w 10pack
Color Rendering Index	80
Color Temperature	2500 Kelvin
Connectivity Technology	Normal bulb
Control Method	App
Controller Type	Push Button
Customer Reviews	4.6 4.6 out of 5 stars (2,069)
Incandescent Equivalent Wattage	20 Watts
Included Components	(10) Halogen Bulbs
Indoor Outdoor Usage	Indoor
Item Dimensions W x H	0.31"W x 1.2"H
Item Weight	0.02 Pounds
Light Color	clear
Light Source Operating Life	7200000 Seconds
Light Source Type	Halogen
Light Source Wattage	20 Watts
Light Type	Halogen
Manufacturer	Heshan VSTAR Lighting
Manufacturer Part Number	2019021305
Material Type	Glass
Model Name	G4 12V 20W
Model Number	G4
Number of Items	10
Package Quantity	1
Power Consumption	20 Watts
Power Source	DC power supply
Shape	bulb
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Indoor lighting
Specification Met	Energy Star
Style Name	g4
Theme	Industrial
UPC	702971041951
Unit Count	10.0 Count
Voltage	12 Volts
Wattage	20 watts
White Brightness	350 Lumens

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