---
product_id: 106305003
title: "Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning"
brand: "idem"
price: "€ 30.27"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/106305003-smart-bike-taillight-w-seat-post-mount-auto-on-off
store_origin: IE
region: Ireland
---

# IPX6 water resistant 20-hour battery Auto On/Off Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning

**Brand:** idem
**Price:** € 30.27
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Light Up Your Ride, Stay Ahead of the Pack!

## Quick Answers

- **What is this?** Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning by idem
- **How much does it cost?** € 30.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/106305003-smart-bike-taillight-w-seat-post-mount-auto-on-off)

## Best For

- idem enthusiasts

## Why This Product

- Trusted idem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Durable, weather-resistant design for all conditions.
- • **Power That Lasts:** Long-lasting battery with low battery warning for peace of mind.
- • **Illuminate Your Ride:** Smart motion and light sensing for ultimate safety.
- • **Brake with Confidence:** Ultra-bright deceleration warning light for added security.
- • **Stay Visible, Stay Safe:** Three customizable flashing patterns for every ride.

## Overview

The Smart Bike Taillight features advanced motion and light sensing technology, automatically activating in low light conditions. With three distinct flashing patterns, a powerful deceleration warning light, and a robust battery life of up to 20 hours, this taillight ensures safety and visibility on every ride. Its IPX6 water-resistant design guarantees durability in any weather, making it the perfect companion for cyclists who demand reliability.

## Description

Title  Smart Bicycle Taillight with Seat Post Mounting - Auto On/Off with Motion and Lighting Sensing; 3 Flashing Patterns for Auto or Manual Mode; Ultra-Bright Deceleration Warning Light; Long Battery Hours; Low Battery Warning; IPX6 Rated Water Resistant; USB Rechargeable; Compact and Durable Design in Metal.  Features  <1> Smart Motion and Light Sensing for Safety and Power Saving: Taillight Turns On Automatically in Nighttime When Bike is in Motion, and Turns off in Daytime or When Bike is Motionless after 60 Seconds.  <2> 3 Flashing Patterns for Auto or Manual Mode: Regular Flashing, Breathe Flashing and Constant On. <3> Ultra-Bright Deceleration Warning Light: Brake Light Turns on 3 Seconds When Bike Decelerates.  <4> Long Battery Hours: Built-in Large Capacity Battery that Lasts up to 20 Hours of Flashing.  <5> Low Battery Warning: Taillight Fades On and Off Quickly Indicating Recharge is Needed. Deceleration Warning is Disabled until Battery is Recharged.  <6> Green: USB Rechargeable.  <7> IPX6 Rated Water Resistant: Built for Any Weather Condition.  <8> Compact and Durable Design in Metal that Outlasts the Harshest Road Conditions.  <9> Seat Post Mounting Kits only.  In the box: (1x) Taillight (1x) USB Charging Cable (1x) Seatpost Mounting Bracket (1x) User Manual

## Features

- SMART MOTION AND LIGHT SENSING FOR SAFETY AND POWER SAVING : Taillight Turns On Automatically in Nighttime When Bike is in Motion, and Turns off in Daytime or When Bike is Motionless after 60 Seconds.
- 3 FLASHING PATTERNS FOR AUTO OR MANUAL MODE : Regular Flashing, Breathe Flashing and Constant On.
- ULTRA-BRIGHT DECELERATION WARNING LIGHT : Brake Light Turns on 3 Seconds When Bike Decelerates.
- GREEN, LONG BATTERY HOURS AND LOW BATTERY WARNING : Built-in USB Recharge Large Capacity Battery that Lasts up to 20 Hours; Taillight Fades On and Off Quickly Indicating Recharge is Needed.
- WATER RESISTANT AND DURABLE : IPX6 Rated Water Resistant Built for Any Weather Condition; Compact and Durable Design in Metal that Outlasts the Harshest Road Conditions. US local customer support with 1-year warranty.

## Images

![Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning - Image 1](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51K6uzuxxyL.jpg)
![Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning - Image 2](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51lqNu91oYL.jpg)
![Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning - Image 3](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/41ubcBNjdfL.jpg)
![Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning - Image 4](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/41F1Vhuq2JL.jpg)
![Smart Bike Taillight w/Seat Post Mount: Auto On/Off w/Motion & Lighting Sensing; 3 Flashing Patterns for Auto/Manual Mode; Deceleration Warning Light; Low Battery Warning - Image 5](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51NQr+QaWcL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Works great and looks cool
  

*by J***N on Reviewed in the United States 🇺🇸 on November 21, 2020*

I used two of these on my electric skateboard.  They look really good and the battery lasts for hours.  I'm not sure why people are commenting on the brightness level, they seem plenty bright to me.  They are weather sealed so they survive wet conditions and they are easy to remove from the mounts they come with.  Highly recommended.

### ⭐⭐⭐⭐⭐ 







  
  
    Highly recommend.
  

*by A***Y on Reviewed in the United States 🇺🇸 on January 3, 2020*

Of all the rear tail lights I’ve been through, I really like this one the best. Mounting is simple. The light lasts a long time. It can be switched from “manual” to “auto” so that it only comes on at dusk with movement, thus, saving the battery. This is small but very visible for its size. Having said all that, I don’t believe this works like a brake light of sorts, as advertised. It’s hit or miss. Still, a great light.

### ⭐⭐⭐⭐⭐ 







  
  
    I have had several tail lights.  This one works and is good value
  

*by B***H on Reviewed in the United States 🇺🇸 on September 7, 2019*

I started with more expensive lights - and they never lasted - mostly they fell off while riding, but some just quit working.  Sometimes I have gone years without a tail light because I had such bad experience.  So, I look at reviews and I look at the mounting mechanism to decide if I will buy a bike light.  This light is about 1/3 the price of others I have had and the quality is as good, and of course it has the best mounting I have ever had.

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---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-27*