Product FAQs

FAQ’s  yalumi Lighting Products


Why would the headlamp suddenly stop working?

 This common problem occurs when the headlamp is accidentally put in the lock mode that is used for the purpose of not going on accidentally when placed inside a backpack or your pocket.  A common occurrence is activating the lock mode accidentally that disables the light button so the light does not work.  The purpose is to avoid accidentally activating the light in a pack causing the batteries to burn out.  To reactivate the light if in lock mode you hold the button down for approximately 6 seconds and it should go back on. The lock mode once understood is a good useful feature for the headlamp.  The reliability of all the headlamp models has been very good. 

Can I cycle to the red light without activating the white light?

Yes, a single press activates the white light, but a 3s long press activates the red light without cycling though the White. 

 What features and performance standards do each model utilize?

Different Models utilizes MULTIPLE MODES that include:


        Focused Narrow Beam

This beam pattern creates a long, powerful beam of light excellent for illuminating distant areas.  The resulting long-throw spotlight is especially well-suited for night walking in areas for obstacle avoidance.

        Focused Wide Angle

This beam pattern is an excellent choice for multipurpose activities.  At close range, focused wide angle beams simulate normal daylight conditions and allow you to take advantage of your peripheral vision

        Dimmable Beam

The narrow focused spot high power LED is easily dimmable delivering up to 140 lumens and throws light up to 90 meters. This advanced circuitry allows selection of whichever power level suits user requirements

        Red LED

The red LED provides a strobe light for safety signaling and spare lighting to preserve night vision.  Use the red LED for night reading to not disturb the person beside you and preserve your night vision.


High Intensity Strobe flashing is available in both the White LED lights and Red LEAD lights.  The strobe is valuable for safety and can be seen for long distances.


The purpose is to avoid accidently activating the light in your pocket or a pack causing the batteries to burn out.  To reactivate the light if in lockmode you hold the button down for approximately 6 seconds and it should go back on. The lock mode once understood is a good useful feature for the headlamp.


What Standards are currently used to test lights?

 The ANSI/NEMA FL-1 standard is a nationally recognized testing methodology designed to ensure accurate and consistent data for lumen output, water ingress, and run times. Without testing to recognized standards, the user cannot accurately compare different lights or evaluate the quality and performance of their purchase.  Yalumi uses the FL-1 standard to test all our lights.


What are the PERFORMANCE SPECIFICATIONS for Yalumi Light Products

 Light Output  (LUMENS)

Light Output is the total luminous flux. It is the total quantity of emitted overall light energy as measured by integrating the entire angular output of the portable light source. Light output in this standard is expressed in units of lumens


Battery Options and Features

All yalumi headlamps use (3) AAA batteries.  Rechargeable Li-Ion batteries with mini-USB are available on Orion front Bike and Antares rear Bike Lights.


Beam Distance

 Beam distance is defined as the distance from the device at which the light beam is 0.25 lux. (0.25 lux is approximately the equivalent of the light emitted from the full moon “on a clear night in an open field


Burntime is the duration of time from the initial light output value—defined as 30 seconds after the point the device is first turned on—using fresh batteries, until the light output reaches .25 lux for headlamps, or 10% of initial output for flashlights and lanterns. This testing procedure was agreed upon by several headlamp manufacturers in 2002.


The headlamp is IPX4-rated for water resistance.  This means the light is protected against Splashing of water from any direction for a Test duration of 5 minutes and Water volume of 10 liters per minute at a Pressure of 80–100 kPa