Front Light HELIO 100

User manual for download here.

It is switched on by a longer press of the button, a shorter press changes the mode:

Maximum light output: 18 hours
Standard light output: 30 hours
Flashing: 45 hours
Output: 100 Lumens
Waterproof
Size: 89 x 38 x 24 mm
Weight: 26.6 g (without batteries)
LED: 2x white LED light