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for more information about the
Waste Electrical and Electronic
Equipment (WEEE) Directive.

PRODUCT OVERVIEW

The Trail Speed 4R packaging contains the following parts:
•  Lamp unit
•  Headband
•  Extension cord with helmet strap
•  Cable guide (side)
•  Cable guide (rear)
•  Rechargeable Li-ion battery
•  USB charging cable
•  Quick guide
•  Storage bag

BEFORE USE

BATTERY CHARGING

The battery needs to be charged before first use. 
1.  Located on the side of the battery pack is a Micro-B connector. 

Attach the included USB charge cable to this Micro-B connector.

2.  Connect the USB connection to a wall outlet, computer or other standard USB connec-

tion.

3.  Beneath the Micro-B connector there are 4 charge indication LEDs. 
•  During charge the LEDs shows its progress with one or more red lights.
•  When fully charged all LEDs turns green.

Charge time is approximately 3 hours.

Note! When battery is fully charged the battery automatically switches to maintenance 
charge. However, never leave a battery unattended while charging

Trail Speed 4R is compatible with all Silva batteries with the same connector as on Trail 
Speed 4R battery. Note that the battery indication may not be accurate with other Silva 
batteries.

ERGONOMIC HEADBAND

The headband is ergonomically shaped to give comfortable fit. Use the 2 buckle adjustments 
to fit it perfectly to your head. Detachable top band included.
Attach the headlamp in the head bracket by sliding the headlamp foot into the snap-in 
socket. To remove, slide the headlamp up and out of the bracket.

FLEXIBLE BATTERY CARRYING

The battery pack can be carried in multiple ways; for example on the headband, in a pocket 
backpack, on the waist using the extension cable and cable guide back, or mounted on the 
bike frame by using the integrated Velcro strap.

DURING USE

SILVA INTELLIGENT LIGHT® AND FLOW LIGHT

SILVA Intelligent Light®

 optimizes the light pattern by the unique combination of a long 

reach spot light and a close flood light. With less head movements and a clear view of near as 
well as far obstacles, you gain the balance and confidence it takes to move fast and perform 
better. Our ingenious 

SILVA Flow Light

 takes the optimization even further by providing 

seamless tuning of the light pattern for your favourite sport. Simply tilting the light down-
wards makes the beams wider to brighten up slower activities. When tilting the headlamp 
upwards, the light reaches longer to provide perfect vision when you move fast.

SWITCH ON YOUR HEADLAMP

A push button is located on the left side of the headlamp body. This button controls all light 
modes. 
•  To start the headlamp with Flow Light activated press push button with a short press.
•  To start the headlamp with Flow Light deactivated press and hold push button for 1 

second

•  To cycle between the different modes use short presses. 
•  To turn the headlamp off press and hold button for 1 second

MAX

SHORT PRESS

LONG PRESS

OFF

OFF

OFF

MED

MIN

FLOW LIGHT ACTIVATED

FLOW LIGHT DEACTIVATED

DEACTIVATED FLOW LIGHT

Flow Light deactivated means that the Light image will remain unchanged even if the 
headlamp is tilted up or down. This might be useful when the lamp is mounted on a helmet or 
a bike handle bar.

TEMPERATURE CONTROL

Note that the headlamp body temperature will increase during use. The headlamp tem-
perature is depending on light mode, ambient air temperature and the airflow (speed). Trail 
Speed 4R is equipped with a temperature control unit that prevents the headlamp body 
from overheating by reducing the power to the LEDs. This means that the lower the ambient 
temperature, the stronger the light output.

Note!

 Always make sure to disconnect the battery when the headlamp is stored in a closed 

compartment such as in a bag, pocket or similar.

LOW BATTERY WARNING

During operation of the headlamp there will be a low battery warning when 10% of the bat-
tery energy remains. This is done by flashing both LEDs for 1 second and repeated again after 
5 seconds.

RESERVE MODE

During operation, the lamp will go into reserve mode when there is 10% power left of the bat-
tery. All LEDs will flash once before the lamp goes into this mode. 
Reserve mode can be overridden by pressing the button. 

Warning:

 If you have pressed the button when headlamp is in reserve mode no more low bat-

tery warnings will appear before the headlamp turns OFF.

BATTERY STATUS INDICATION

When battery is connected to the headlamp and turned ON, current charge status is visible 
for 30 seconds on the battery pack.
If you want to check battery status during use, the headlamp needs to be turned OFF and 
then back ON.

Art. no 37874

FULL VERSION MANUAL

TRAIL SPEED 4R

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