Diameter: Dia. 49mm (1.93 in.)
Depth: 61.5mm (2.42 in.)
LED Base: GU10
Beam Angle: 30°/ 60°
Available Colors: Pure White (5500-7000K) and warm white (2700-3500K)
1W EPISTART:  80-120LM/LED 
1W EDISON:  80-120LM/LED
1W CREE: 70-110LM/LED
Power Consumption: 3W (3*1W)
Input Voltage: AC 90-130V/AC 200-240V
UV or IR radiation: None
Lifespan: 50,000+ hours

This product is made up of three 1watt high power LED

EPISTAR: Made in TAIWAN and encapsulated in CHINA. Brightness degradation: 7 %-10% after 1000 hours

EDISON: Made in TAIWAN, original imported. Brightness degradation: 5 %-8% after 1000 hours

CREE: Made in U.S.A, original imported. Brightness degradation: 3 %-5% after 1000 hours

JX LED Driver: Medium quality LED Diver. Fault rate: 0.3%-0.7%

LF LED Driver: High quality LED Diver.  Fault rate:  0.1%-0.3%

Datasheet of each version LEDs:

EPISTAR-1W-Warm-White.pdf
EPISTAR-1W-Pure-White.pdf
EDISON-1W-Warm-White.pdf
EDISON-1W-Pure-White.pdf
CREE-1W-Warm-White.pdf
CREE-1W-Pure-White.pdf

The GU10 LED bulbs compare very favorably with their halogen counterparts. Using 3pcs high power 1W LED, it can be used to replace a 20Watt halogen bulb. It’s available in dimmable and non-dimmable version; while it can work with the incandescent dimmer, no need to change the existing circuit. With (2700K-3500K) warm white color tone is deal for ambient lighting application, while (5500K-7000K) cool white color is good for working light application.