It was preaty fast. The product is good but Iexpect more.
Nice. Aluminium body seems durable, battery box is sealed by thin O-ring so small reain is no issue, provides enough light. Not tested on bicycle yet but should be enough for middle speeds (I would not dare steep downhill at night anyway). The only strange thing is the switch - it has Off position after every step (high power-off-mid-off-low-off...). But why not.