Buy on Amazon : http://www.amazon.com/gp/product/B000MGPO4O?tag=scratchandsti-20
Canon VL-10Li II Video Light for Canon Camcorders
Uses a separate lithium-ion battery as its power source so it doesnt drain your camcorders supply
Attaches easily to the accessory shoe of the camcorder
Compatible with many Canon digital camcorders including the HV10 and HV20
