A review of the Headlamp of Sunix You can find it by searching "Shuofang Headlamp" on Amazon :)

1. Find Out an Easy and
Comfortable Way
Come From Sunix(Shuofang)

2. You spelunk and wear it for hours without being bothered
much.
Weight is important factor
that impacts wear comfort
and therefore usability in a
headlamp and this one's
weight - 88 grams - is
quite bearable.

3. The lamp has 3 illumination modes,
out of which 2 work well.The high
beam mode where the 'big' front light
turns on is bright enough to let you
see what's in front for a few dozen
yards.
There are 2 smaller side
floodlights - you cycle between
off-big light-small lights by
tapping one button.
Then there are the 2 even smaller red
lights that should be triggered by a
special 2-second button press, it really
easy to operate.

4. To summarize, what works is big light, which is
good and, according to specs you should get up
to 10 hours of it on a full charge.
You can also use the smaller lights should be
fine because you get 55 hours hours of use at
the expense of brightness and range.

5. The unit is comfortable to wear
because it's light and the elastic band
is easily adjustable.
It charges through a USB port and comes
with a USB charging cable, just in case you
don't have one handy.