Humm, It sounded too good to be true..
MR16 48 SMD 3528 LED Low Voltage 12 V DC/AC LED Light - Low Voltage LED Lights - LEDLight
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MR16 48 SMD 3528 LED Light. Very bright over 220 lumens uses only 2.5 watts of power very efficient LED Light. 12 VDC. Approximate size is 1.82in x 1.96in.
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Hey, they made a movie about it..
I also found 120vac version that uses 3.5 watts..
48 SMD 3528 LED E27 LED Light Bulb - Household LED Lights - LEDLight