The Perfect Complement to the EOS M Digital Camera.
Ultra-compact and Ultra-lightweight flash unit, perfect for the Canon EOS M Digital Camera
Whether mounted on top of the Canon EOS M Digital Camera or stowed in a pocket, the diminutive yet powerful Speedlite 90EX is 1.7" (w) x 2.0" (h) x 2.6" (d) and a featherweight at 1.8 oz. It runs on 2 AAA batteries, recycling quickly between exposures. To save power, it automatically turns off after 5 minutes of idle operation.