Nite Rider Sentinel 250 Rear Bike Light
A 250 lumen light output with a range of light modes with integrated lasers that create your very own virtual bike lane for the ultimate safety when road cycling.
Lasers
NiteRider’s Sentinel 250 rear light comes with integrated lasers that projects ultra-bright laser lines on the ground creating your own virtual lane.
Light Modes
The light comes with 7 different light modes which can easily be toggled between using the top power button. The light modes included come with a range of different outputs suitable for a range of environments and terrains with different outputs with flashing, constant and laser modes.
Mode One (Flashing): 6.30 hours
Mode Two (Flashing): 5 hours
Mode Three: 8 hours
Mode Four: 45 hours
Mode Five (Lasers Only): 11.30 hours
Mode Six (Lasers Only): 11.30 hours
Mode Seven (Lasers Only): 5.30 hours
USB Rechargeable
The internal lithium-polymer battery is rechargeable and can easily be charged, via the cable provided, by plugging the light into any standard USB port. When powering off the light’s central circle will light up red indicating a low battery so you know when to charge.
Mounting
To mount the Sentinel to your seat post the light comes with a easy on and off seat post mount with a quick release tab which is super convenient for urban commuters.
In the Box
LED Sentinel 250 rear light head
Seat post mount
USB charging cable
Features
- 250 maximum lumen output
- 7 different light modes
- Daylight Visible Flash mode
- Group Ride mode
- Highly visible laser lines
- Internal lithium-polymer battery
- Up to 45 hours of battery life
- USB rechargeable
- 3 hours full recharge time
- Low battery light indicator
- Easy on and off seat post strap mount
- Quick release tab
- FL1 standard IP64 dust and water resistance
- Weighs 116g
Buy NiteRider Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.



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