I actually bought it for the mounting clip. this set is cheaper than buying just a Mako clip. The lights are great but the clip is quite weak and when I was knocked of my bike recently the light was knocked off. The light was fine, but the clip broke.
Apart from the fact that it is difficult to read, it does have back lighting if you press the left-hand button, but still difficuly to see. It also is seriously affected by my front light, it displays a speed of nearly 30mph whilst standing still. I discovered this too late to return it. It doesnt install well on a bike with suspension front forks - the sender unit assumes small fork tubes.