Ah, okay. Thank you both so much. I guess this will not be fiesible then. I just looked at the datasheets for the onboard IMU and radio module. The IMU only draws 0.9 - 1.25 mA but the Radio module when used for Bluetooth out draws 130mA. (Just as Railroader mentioned in comment #2). Do either of you have any battery recommendations that could work? The goal is to basically have an accel/gyro that can be worn like a watch.