This light is a huge upgrade over my previous one. I picked it up during one of the holiday sales and am pleasantly surprised with its performance at such a low price point. Battery life has been great using one of the pulse modes for my daily commute. I highly recommend if you can grab it on sale.
Have everything ready before puncturing the cylinder. I usually bring a back up cylinder. One time use but the top is reusable. A must have if you don't have a mini pump.
Model was recommended to me as replacement by customer service rep because the flexible air hose is much gentler on presta valve stems than conventional compact frame pumps. - STILL very reliable either to top-off air pressure or repair flat on the road.