Smart Bicycle Rear Light, Brake Sensor - Red / Arc
This bicycle light is designed to improve the cyclist's visibility and signal their presence more clearly when light levels decrease. Its compact design and various modes make it easy to use for daily commutes, sports rides, and travel after dark. Offered by WEST BIKING, this model is presented below with its original specifications reorganized to make comparison and selection easier.
Product highlights
Fall-resistant, wear-resistant, stronger aluminum alloy: the main body of the bicycle light is made of aluminum alloy, which is more resistant to scratches and falls
Light detection, automatic light activation: in smart mode, the built-in photosensitive element monitors the ambient brightness, automatically turns on in the dark, and automatically turns off in bright light
COB light beads: 20 COB light beads provide bright light without glare
Smart braking detection: after detecting braking, W4S immediately switches to brake light mode. The rear light becomes very bright for 2 seconds to alert those behind to pay attention and improve safety
Vibration detection, automatic wake-up: the rear lights automatically turn off after remaining stationary for one minute with the lights on, and automatically turn on when they vibrate
Visibility suited to traffic conditions
The steady or flashing modes mentioned in the specifications allow the light signal to be adapted to the surroundings. A continuous mode provides a stable presence, while flashing attracts more attention in shared areas or when visibility is reduced.
Position the light so that it remains visible without covering the bicycle's reflectors. A front light should be aimed along the path without dazzling other road users; a rear light should remain unobstructed behind the cyclist, even when the bicycle carries a bag or loose clothing.
Installation, charging, and battery life
Carefully attach the mount to a compatible area, then check that the light does not rotate under vibration. Before a night ride, check the battery level, verify that the controls work, and select the desired mode. Battery life naturally varies depending on the selected intensity and the automatic functions enabled.
For charging, use the cable and power supply suitable for the manufacturer's specifications. Close the connector cover properly before riding again. Regular charging helps keep the light available for unexpected trips.
Use in bad weather and maintenance
The stated water resistance applies to splashes or rain according to the rating specified in the characteristics; it does not mean that the product can be submerged. After a wet ride, wipe the housing and wait until the charging port is completely dry before connecting the cable.
Clean the light surface with a soft cloth to prevent dust from reducing visibility. Periodically check the mount and its orientation. The light supplements reflective elements and the cyclist's vigilance, but does not replace compliance with traffic rules.
Technical specifications and contents
COB light beads: 20 COB light beads provide bright light without glare
Smart braking detection: after detecting braking, W4S immediately switches to brake light mode. The rear light becomes very bright for 2 seconds to alert those behind to pay attention and improve safety
Vibration detection, automatic wake-up: the rear lights automatically turn off after remaining stationary for one minute with the lights on, and automatically turn on when they vibrate
Light beads: COB beads
Battery: 400 mAh lithium battery
Size: 65 x 48 x 33 mm
Brightness: 60 lumens
Weight: 40 g (without mount)
Mode: slow flash/breathing flash/fast flash/steady light/double flash
Housing: aluminum alloy
Smart functions: brake sensor/automatic start and stop
Prepare properly for use
Before first use, check the size, dimensions, compatibility, and all items received whenever these criteria apply to the product. Make the necessary adjustments while stationary, then conduct a gradual test in a safe environment. This check helps quickly identify an uncomfortable fit, insufficient attachment, or incorrectly positioned part.
Keep the manual and supplied accessories. After dusty, damp, or intensive use, clean the product appropriately and store it in a dry place. Regularly inspect the seams, surfaces, fasteners, and relevant wear areas; replace any part showing abnormal deterioration before resuming activity.
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