Both of these lights are available separately, and that's a good thing because the LS725 front light is fantastic, while the LS605 rear isn't.
The front Ecopower LED runs off four AA batteries, kicks out nearly as much light as the very bright Cateye Single Shot and is hugely visible. It gave just over nine hours of use before the light level dropped off considerably, and then ran for a further 19 hours.
It is also bright enough to see with. The six-LED rear LS605, powered by two AAAs, is pretty dismal. It doesn't give out much light, and what it does has to poke through a tiny slot in the light unit. It is visible from all angles, but it isn't really bright enough from those angles. If we had tested the LS725 alone it would have easily scored 9 out of 10.