the Westcott Ice Light 2 is rated at 1750 lumen at full output, and at around 1m from the subject, this gives exposures of around 1/125th sec, f/2.8 at ISO 400 (
light value of around 3) which is about 1-2 stops brighter than average household lighting levels, but certainly would not be useful in sunlight or even cloudy days, and really is best used indoors or after sunset outdoors. It could be useful for macro work in the shade when held 6“ from subject.