Diameter: Dia. 40mm (1.57 in.)
Depth: 145mm (5.71 in.)
LED Base: E 27
Beam Angle: 120°
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: 5W (5*1W)
Input Voltage: AC 90-130V/AC 200-240V
UV or IR radiation: None
Lifespan: 50,000+ hours

This product is made up of Five1watt 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

Used for indoor only. This dimmable version led light can be used with ordinary incandescent (triac) dimmers. Replacing Halogen Lights or incandescent light bulbs with LEDs, these PAR20 LED Bulbs can fit into standard sockets and they work well for track lights, canister and recessed fixtures -Save Energy, Long Life.