Manufacturer: Guyot Designs Inc.
Year of Manufacture: 2006
Manufacturer Website: www.guyotdesigns.com
Color: Black with some orange accents.
Manufacturer's Listed Measurements: Width
3.2 in (8.2 cm); height 1.5 in (3.9 cm); length 3.2 in (8.2
Actual Measurements:Width 3.2 in (8.2 cm);
height 1.5 in (3.9 cm)
Manufacturer's Stated Weight: 2.5 oz (70
Measured Weight: 2.5 oz (70 g) without batteries
MSRP: $21.95 USD
The Firefly is a LED light that fits onto wide
mouth bottles. Genius, I must say. Now I can have a lantern
with my wide mouth bottle. I think this concept is a nifty
The Firefly is constructed of a granite grade
glass-filled nylon lid. I have read that this type of construction is able to handle high
temperatures very well. The LED lights are sealed inside the
lid, so there is no worry of malfunction from liquid leaking
into the light housing. There is also an O-ring seal that helps
prevent leaking and provides a tight seal.
The black adjustable tether cord is made of
4 mm (0.16 in) Sterling climbing rope. This is adjusted by
sliding the orange plastic piece along the rope to change
the circumference of the rope. The manufacturer's name and
logo are etched on both sides of the two plastic pieces that
are attached to the tether cord.
The top of the lid has three screws that hold
the lid of the battery compartment in place. There is also
an orange button which is the light control switch. The light
is activated and deactivated by pressing this button. The
dimmer is also controlled with this button. To activate the
dimmer I had to have the light on and then press the orange
button in for a few seconds. The light began to go dim. I then
released my finger from the orange button and the light stopped
going dim. I did notice that once I dimmed the light slightly
and then held the orange button in the light became bright
again but then started to get dimmer.
The lid also has what I would like to call feet on the top. There are three plastic projections that enabled me to stand the Firefly on the base so that it is raised slightly. These feet allowed me to stand the Firefly on the base with stability and the light switch was not touching the ground. These feet are not adjustable so I had to find a piece of semi flat ground to stand the Firefly on its base. It stands best on a flat surface, but it stands OK on small gravel, grass, and slightly uneven surfaces.
Top of the Firefly's lid.
Three AAA batteries are required to have light
with the Firefly, nope they are not included. It is very simple
to install the batteries. The three screws need to be removed
on the top of the lid. Just lift the top off, insert the batteries,
and screw the lid back on by tightening the three screws.
Bottom of the Firefly's lid.
The tether cord is attached to the Firefly
lid by an orange plastic piece. This portion of the cord that
is closest to the Firefly can not be adjusted. Only the plastic
piece furthest away from the Firefly can be adjusted to fit
around the top of a wide mouth bottle.
The Firefly is designed to fit on standard
wide mouth bottles (Bison, Cyclone, GSI, Nalgene polycarbonate
and polyethelene). I use the Firefly on a wide mouth Nalgene bottle that measures 2.25 in (5.7 cm) in diameter (inside). It does not fit on the Nalgene N-Gen or
Swiss Gear bottles.