ArduIMU Voltage and time problem

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hi guys, know not strictly arduino product figured if knew how work out on here. bought arduimu , programming onto it, wondering know if can run board off 3.3v battery? https://www.sparkfun.com/products/11055. checking through page , seems suggest board says vin 6-12v. want run arduino accelorometer values, mpu6000 , atmega guess? successful @ programming onto 3.3v ftdi board?

also know time appears int value? i'm not sure if utc or similar that? , wondering if knew how accurate time be? i'm looking @ obtaining times in tenth of second.

that board uses 5v atmega328, else using 3.3v.
the atmega328 @ 16mhz running @ 3.3v outside specifications, run.

what 3.3v battery ? li-ion battery of 3.0 4.2 v ?

when supply 3.3v power plug of board, voltage regulator lower voltage some, , atmega328 might not run.
i think board run 4.0v , up, maybe 3.6v, , perhaps 3.3v lucky.


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