The bike itself is a very nice white Haro Express 21-speed, with a step-through frame and 700mm wheels. I don't know how to size a step-through frame, but the lowest seat position is 26" above the crank axle.
The electric assist is a rack-mount lithium ion battery with a very simple twist throttle. The battery has good range but conks out briefly after extended steep hill climbing -- it may need to be replaced in the next couple of years.
About me: Yes, if the ad is up, it's still available. Price is firm until June 1. Check out the rest of my spring cleaning sale at http://www.usednanaimo.com/p/dsjstc