27.2 / 30.9 / 31.6 (mm)
Color surface finish
Polished Silver / Matt Black
2 bolt clamp, offset 9mm, mechanical stop
Aluminum 6061 T6
2 wide angle red LEDs,
Lithium-polymer battery 3.7V,
5LED: 10 hours
3LED: 15 hours
Seatpost test standard
ISO 4210 City, Mountain
standard or directive
RoHS, UN3481, IPX5
Rear light seatpost
USB charge cable (200cm)
Use the correct diameter corresponding to your bicycle frame.
Use the appropriate tool to fasten the saddle support.
Adhere to the safety lines of the minimum and maximum insertion heights.
The rear light may only be operated in the following angular range: Max 76˚, Min 70˚.
The lower two LEDs may be sunk in the frame. Always pay attention to the mechanical stopper of the maximum insertion depth!
The rear light must be mounted in such a way that it is illuminated at the rear. The reference axis (see drawing) must be aligned parallel to the bicycle‘s longitudinal axis.
The two lower LEDs may be inserted into the frame. The minimum insertion length into the frame is 100mm. The rear light must be aligned so that it shines backward. The reference axis (see drawing) must be aligned with the longitudinal axis of the bicycle. A mechanical stopper prevents the insertion of the seatpost to cover the 3rd LED(from the bottom) and damage to the two top protruding LEDs.
(Frame seat tube)
The second top LED functions as a button and is used to operate the rear light.
Off → 5 LEDs → 3 LEDs → Long press to switch off
Low battery alert
Indicated by a blue LED integrated into the micro-USB port. As soon as this LED lights up, the battery still has enough capacity to power the LEDs for 1 more hour in accordance with the regulation. The micro-USB port is covered with a transparent silicone cap so that the blue LED is visible.
Micro-USB 2.0 port integrated in the seat rail clamp with a transparent silicone cover for splash-water protection.
Charging voltage: 5V
Charging current: 0.5A – 2.0A
In order to reach the full load capacity, it takes about 2.5 hours. During charging, the first led flashes in RED. The flashing stops, changes to continuous red light on when the battery is completely charged. When the battery is fully charged, remove the cable from the USB port. Should the product become excessively hot during charging, stop the charging process. Never charge the battery when the USB port is wet. Full charge and discharge cycles 500.
At startup, the product must be dry. Remove any moisture before riding.
After installation, test that the seatpost does not drop under load.
Take care that the LEDs are not covered by a bag or clothing when riding.
Do not make any independent changes to the product. Do not try to open the product.
The product contains one lithium-polymer battery.
Steps to take in
the event of a failure
If either LED no. 4 or no. 5 is defective, the mode must be switched to the 3 LED mode to conform with the regulation. Repair or replacement is nevertheless recommended. If LED no. 1, no. 2 or no. 3 fails, the seat post must in any case be sent to the importer for repair or replacement.
If the rear light is defected, it must be immediately replaced.
If you ride with the seat post low, it may be the case that the seat clamp covers one of the lenses. Please ensure that the clamp area is not directly tightened on to the lens as per the illustration below.
When fitting the saddle, please make sure that the small transparent rubber cap for the microUSB connection is clamped under the strut.
Do not pull on the charging cable excessively.
If the USB connector is exposed to heat, it may lose its shape.
We recommend using the supplied USB cable to ensure proper battery charging.
If the USB plug has deformed, it must be replaced.
Min.: -15° C
Max.: 45° C
Optimum storage temperature: 20-25°C
Please be aware before order. The import tax will be charged to you separately. Taxes may vary depending on the country. If you want to return or exchange, you will be charged a Fedex round-trip shipping fee. Prices are inclusive of basic international shipping. Regions where additional shipping fee are generated will be charged at the payment window.
Please send us unused products by prepaid, will refund you after confirming arrival.
Please send us unused items by prepaid, and send $25~$35 re-delivery courier fee depending on your location. After receipt the goods and courier fee, we will replace it with another product.
Seatpost and light module: 2 years from the date of purchase.
In case of warranty, (replacement or repair), please contact the distributor through whom the product was purchased.
The product packaging is made of recyclable materials.
Dispose of these environmentally friendly in the provided collection containers.
Old appliances and batteries must not be disposed of with normal household waste.
According to EU Directive 2012/19/EU, the product must be disposed of properly at the end of its service life. Return the old device to a collection point for electronic waste or a recycling center.
The LEDs are numbered from top to bottom
If LED numbers 4 or 5, or 4 and 5 are defective, it is permissible to switch to the 3-LED mode, which complies with the approval. A repair or replacement is still recommended.
If LED numbers 1, 2 or 3 are defective, the seatpost must be sent to the importer for repair or completely replaced.