Sofirn HS40 - Product Specifications; Emitter, Battery, and Dimensions; Construction and Durability Features; Automatic Stepdown and Circuit Protection

ANSI/NEMA FL1 Chart
Specifications
 Emitter: 1 x SST40 LED with a lifespan of up to 50,000 hours
 Battery: 18650 battery
 Operating voltage: 2.7 V - 4.2 V
 Dimension: 111 mm (length) × 26 mm (head diameter) x 25 mm (body diameter)
 Weight: 65 grams (without battery, without headstrap)
 Headlamp body: Aerospace grade 6061 grade aluminum alloy, CNC manufactured to hard-anodized to
military grade specification type III, anti-abrasive finish to get solid built body, anti-crash geometry and
better heat exchange.

Toughened mineral glass lens - scratch and wear resistant
 Automatic Stepdown: Turbo mode steps down to High mode automatically to prevent overheating.
Circuit Protection

It’s protected from improper battery installation.
 When it’s too hot at Turbo or high mode, it automatically steps down to lower mode to prevent
overheating.
 It automatically steps down to lower modes when the 18650 battery does not have enough power.

It turns off when voltage is lower than 2.7V. Please replace or recharge the battery as soon as
possible.

Low power indicator: theheadlamp tellsbattery status, ifbattery doesn’t have enough power,headlamp stayson
lowermod
Battery Specification
Battery Installation: Unscrew the tailcap to
insert one 18650 battery with the
anode side (+) towards the head, then screw
the tailcap back on.
Group 1
Stepped
Modes
Mode
Moonlight
Low
Medium
High
Turbo
Strobe
SOS
Beacon
Luminous Flux [lm]
1
10
300
800
2000
2000
300
2000
Runtime [hrs]
400
220
8
2
2.5
Beam Distance [m]
-
21
68
129
175
-
-
-
Peak Intensity [cd]
-
107
1150
4137.5
7625
-
-
-
Group 2
Ramping
Mode
Mode
Ramping: Moon to Turbo
Strobe
SOS
Beacon
Luminous Flux [lm]
1 - 2000
2000
300
2000
Runtime [hrs]
depending on ramping level
5
22.5
11.25
Impact Resistance
1m / 3.28 ft.
Water Resistance
IP68 (up to 2 meter under water, not for diving)
Charging Specification
USB-C port, input DC 5V 2A
Notes
The above mentioned parameters are based on tests according to international
flashlight testing standards (ANSI/NEMA FL1) using one 3000mAh 18650 Li-ion
battery in our laboratory. Results may vary with different batteries or under
different environmental conditions.
Battery Type
Dimension & Quantity
Nominal Voltage
Compatibility
Rechargeable lithium-ion battery
18650 x 1
3.7 V
Yes