Nitecore NU25 Manual

Features

• Lightweight multi-output rechargeable headlamp
• Specially designed for outdoor activities
• Utilizes a CREE XP-G2 S3 LED to emit a maximum output of 360 lumens
• Onboard High CRI white light (CRI≥90, colour temperature of 4500K) and auxiliary red light
• Main light utilizes an orange peel reflector for a uniform and soft beam
• Maximum beam intensity up to 1650cd and beam distance up to 81 meters
• Built-in 610mAh Li-ion polymer battery
• High efficient constant circuit with runtime up to 160 hours
• 4 brightness levels, 3 light sources and 3 special modes selectable
• Intelligent Li-ion battery charging circuit (via Micro-USB charging port)
• Built-in power indicator reports remaining battery power (Patent No. ZL201220057767.4)
• A flood lighting system provides 100° beam angle
• Tilting mechanism allows for 60° adjustment
• Made from durable PC material
• IP66 rating
• Impact resistant to 1 meter

Specifications

Size: 2.19"×1.36"×0.91" (55.5mm×34.6mm×23.2mm) (holder included)
Weight: 0.99oz (28g) (holder included)

Accessories

Headband, USB cable

Technical Parameter

FL1 STANDARD	Turbo	High	Mid	Low	Auxiliary White Light	Red Light (low)	Red Light (high)	Red Caution Light	SOS	Beacon
	360 LUMENS	190 LUMENS	38 LUMENS LUMEN	1	20 LUMENS	0.9 LUMEN	13 LUMENS	13 LUMENS	360 LUMENS	360 LUMENS
	*30min	5h	8h	160h	6h15min	68h	7h45min	13h	─	─
	81m	61m	27m	3.8m	5.5m	─	4m	─	─	─
	1650cd	950cd	190cd	3.7cd	7.5cd	─	4cd	─	─	─
	1m (Impact Resistance)
	IP66 Rating

NOTICE: The above data has been measured in accordance with the international flashlight testing standards ANSI/NEMA FL1 using a built-in Li-ion battery (3.7V 610mAh) under laboratory conditions. The data may vary slightly during real-world use due to battery type, individual usage habits and environmental factors. * The runtime for Turbo mode is the testing result before starting temperature regulation.

1. 
   Possible dangerous radiation! Don't look into the light! Maybe dangerous for your eyes.
2. Do not assemble or modify this product, as doing so voids the warranty.

Operation Instruction

NU25 has two switches as shown in the diagram:

Main Light

ON/OFF
Turn on: When the light is off, tap the main switch to turn on the main light and enter the lowest brightness level.
Turn off: After the light is switched on, either wait for 3 seconds then press any switch to turn off the light, or press and hold the red light switch to turn off the light right away.

Changing Brightness Level of Main Light
Within 3 seconds after the light is turned on, tap the main switch in succession to cycle through Low-Mid-HighOFF.

Auxiliary White Light

ON/OFF
Turn on: When the light is off, press and hold the main switch for 1 second to turn on the auxiliary white light. Turn off: After the light is switched on, either wait for 3 seconds then press any switch to turn off the light, or press and hold the red light switch to turn off the light right away.

Auxiliary Red Light

ON/OFF
Turn on: When the light is off, tap the red light switch to enter the red light (low).
Turn off: After the light is switched on, either wait for 3 seconds then press any switch to turn off the light, or press and hold the red light switch to turn off the light right away.

Changing Brightness Level of Auxiliary Red Light
Within 3 seconds after the red light is turned on, tap the red light switch in succession to cycle through Red Light (low)-Red Light (high)-Red Caution Light-OFF.

Direct Access to Turbo

When the main light is on, press and hold the main switch for 1 second to enter Turbo (360 lumens).
NOTE: The Turbo mode will run for 30 second before it steps down to prevent overheating. The TURBO mode can be reactivated immediately, but if the NU25 is still overheated, the light will remain at lower level to protect the components and prevent damage caused by overheating.

SOS/Location Beacon

In any state (non-locking), press and hold the main switch for 3 seconds to enter SOS, press the main switch again within a 3 second interval to activate location beacon. Press the main switch again will turn off the light. To exist special modes at any time, wait for 3 seconds then press any switch to turn off the light.

Lockout/Unlock

In any state (non-locking), press the two switches simultaneously to lockout the NU25. A red indicator will blink once to notify the user. In lockout state, the NU25 cannot be turned on. If any switch is pressed, the red indicator will blink once to notify user.
To unlock, press the two switches simultaneously again to activate the NU25 and enter the Low mode.

Power Tips

When the NU25 is turned off, press and hold the red light switch, the red indicator will blink to report its remaining power:

1. 3 flashes represent battery level above 50%.
2. 2 flashes represent battery level below 50%.
3. 1 flash represents battery level below 10%.

NOTE: Recharge the NU25 when its output appears to be dim or the flashlight becomes unresponsive.

Recharging

This product is USB rechargeable. Connect one end of the USB cable to the charging port of the NU25 and the other end to a power supply as shown in the diagram. Under normal charging conditions, a red indicator will illuminate steady. When charging is complete, the NU25 will automatically terminate charging and the red indicator will turn green. It takes approximately 2 hours to fully charge the headlamp. After fully charged, the standby time is approximately 1 year.

SYSMAX Innovations Co., Ltd.
TEL: +86-20-83862000
FAX: +86-20-83882723 E-mail: info@nitecore.com
Web: www.nitecore.com
Address: Rm 2601-06, Central Tower, No.5 Xiancun Road, Tianhe District, Guangzhou, 510623, Guangdong, China
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