Electron's Nano 9 has the same beneﬁts and same weaknesses as Oxford’s similar UltraTorch. Both have nine LEDs, which offer a blue/white light, and both are powered by AAA batteries – four for the Nano, two for the Oxford.
If you’re planning on using it in ﬂashing mode, there’s a claimed running time of 80 hours, but on constant mode we got little more than four hours, which is far from ideal for day-to-day use.
That run time would be okay as a backup, as the light isn’t really bright enough to use on its own. The CNC-machined aluminium casing inspires conﬁdence for long-term durability.