---
product_id: 40218911
title: "WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee!"
brand: "wasafire"
price: "11.36 DT"
currency: TND
in_stock: false
reviews_count: 8
url: https://www.desertcart.tn/products/40218911-wasafire-magnus-innovation-s100-usb-bicycle-tail-lights-powerful-100
store_origin: TN
region: Tunisia
---

# 100 Lumens Brightness IPX5 Waterproof Durability 30+ Hours Runtime WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee!

**Brand:** wasafire
**Price:** 11.36 DT
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Light up your ride, own the night!

## Quick Answers

- **What is this?** WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! by wasafire
- **How much does it cost?** 11.36 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/40218911-wasafire-magnus-innovation-s100-usb-bicycle-tail-lights-powerful-100)

## Best For

- wasafire enthusiasts

## Why This Product

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

## Key Features

- • **Universal Fit:** Seat mount design fits all bike types—mount it once, ride anywhere.
- • **Sustainable Power:** USB rechargeable for eco-friendly convenience—ditch disposable batteries and never run out mid-ride.
- • **Endurance Champion:** Up to 30 hours of continuous light on a single 45-minute USB charge—stay lit through every adventure.
- • **Rugged Reliability:** Built tough with IPX5 waterproof rating—ready for mountain trails, dirt roads, or city streets.
- • **Unmissable Visibility:** Be seen from 5 blocks away—ride with confidence and claim your space on the road.

## Overview

The WasaFire Magnus Innovation S100 is a powerful 100-lumen USB rechargeable bicycle tail light designed for maximum visibility and durability. With an IPX5 waterproof rating and up to 30 hours of continuous runtime from a quick 45-minute charge, it fits all bike types and ensures safety on every ride, whether on mountain trails, dirt roads, or city streets.

## Description

desertcart.com : WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! : Sports & Outdoors

Review: Excellent value - I've been using this light for a few days now during rainy days. It has a nice selection of strobe and fixed light modes, and your last setting gets "saved" after you turn it off which I always find very convenient for any bike light. The light itself is very bright at the highest setting, and it's versatile given the possible ways and sites it can be mounted (a rubber band and a elastic fabric Velcro straps are included with the light). Battery life is as stated and the light can be conveniently charged using the included USB cable. Although of course I'm still not in the position of commenting on long-term durability I can say that I have noticed no malfunction whatsoever even riding with very wet conditions. After you register this product online on the manufacturer's website (it takes a minute) you will get lifetime warranty. I have previous experience with Magnus Costumer Service which I contacted for problems I had with another product of theirs; in my experience they were always very nice and showed me that they really stand behind their product. If anything new will come up I will update this review. For now, I would strongly recommend this product: it's a good deal for a versatile bike light that does its job well.
Review: Magnus Gear products are excellent. - I have two other bike taillights, and they are both good, but the S100 is certainly the brightest. It is EXTREMELY bright, which is exactly what I want to maximize my visibility while riding. My wife has followed me with the three lights on during the day, and tells me that the S100 is way more visible and eye catching. I own two other Magnus products which I use regularly, the Vision II bike light, and the Atlas headlamp, and they are both excellent. Magnus Gear is serious when they say lifetime warranty. My first product of theirs was a Vision I bike light, and I used it for a couple years and loved it, but one day I dropped it on a concrete floor and damaged the control switch. I contacted Magnus asking if I could buy a replacement switch, thinking that it would not be covered by warranty since the damage was my own fault. To my surprise and pleasure, they quickly sent me a note apologizing for the problem with the light, and I received a new Vision II headlight a couple days later. BTW, the Vision II makes an excellent flashlight -- super bright, easy to carry and long lasting battery -- and I use it on night time walks in the unlighted rural area where I live.

## Features

- GUARANTEE TO BE SEEN: Bicycle tail lights LED demands attention from 5 blocks away and get the space you need to feel safer on the road.
- STAY ON THE ROAD LONGER: Bicycle rear tail light guarantees a peace of mind knowing you have up to 30 Hours of Attention.
- BUILT TOUGH, BUILT TO LAST: Extremely durable, waterproof, and indestructible, perfect for dirt bike, mountain bike, and road bike.
- USB RECHARGEABLE: 45 min charge with any USB port for 30 hours of constant lighting.
- WIN - WIN SITUATION - Guarantees you're always covered through the life of the ownership.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N1ZQYTO |
| Auto Part Position | Rear |
| Brand | WasaFire |
| Brand Name | WasaFire |
| Brightness | 100 Lumen |
| Color | Red Bike Tail Light |
| Customer Reviews | 4.1 out of 5 stars 111 Reviews |
| Included Components | 1 |
| International Protection Rating | IPX5 |
| Item Type Name | Bicycle Tail Light |
| Light Output Maximum | 100 Lumens |
| Manufacturer | Magnus Innovation |
| Manufacturer Part Number | S100 |
| Material | Plastic |
| Material Type | Plastic |
| Mounting Type | Seat Mount |
| UPC | 742574228403 |
| Water Resistance Level | Waterproof |

## Product Details

- **Color:** Red Bike Tail Light
- **Brand:** WasaFire
- **Material:** Plastic
- **Water Resistance Level:** Waterproof
- **Mounting Type:** Seat Mount
- **Brightness:** 100 Lumen
- **Auto Part Position:** Rear
- **International Protection Rating:** IPX5
- **Manufacturer:** Magnus Innovation
- **UPC:** 742574228403

## Images

![WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! - Image 1](https://m.media-amazon.com/images/I/81va-8foYdL.jpg)
![WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! - Image 2](https://m.media-amazon.com/images/I/51JdAYFuopL.jpg)
![WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! - Image 3](https://m.media-amazon.com/images/I/51InKjDxjXL.jpg)
![WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! - Image 4](https://m.media-amazon.com/images/I/51lBnFxJfuL.jpg)
![WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee! - Image 5](https://m.media-amazon.com/images/I/51V917qs0jL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent value
*by G***E on March 26, 2017*

I've been using this light for a few days now during rainy days. It has a nice selection of strobe and fixed light modes, and your last setting gets "saved" after you turn it off which I always find very convenient for any bike light. The light itself is very bright at the highest setting, and it's versatile given the possible ways and sites it can be mounted (a rubber band and a elastic fabric Velcro straps are included with the light). Battery life is as stated and the light can be conveniently charged using the included USB cable. Although of course I'm still not in the position of commenting on long-term durability I can say that I have noticed no malfunction whatsoever even riding with very wet conditions. After you register this product online on the manufacturer's website (it takes a minute) you will get lifetime warranty. I have previous experience with Magnus Costumer Service which I contacted for problems I had with another product of theirs; in my experience they were always very nice and showed me that they really stand behind their product. If anything new will come up I will update this review. For now, I would strongly recommend this product: it's a good deal for a versatile bike light that does its job well.

### ⭐⭐⭐⭐⭐ Magnus Gear products are excellent.
*by W***T on March 25, 2017*

I have two other bike taillights, and they are both good, but the S100 is certainly the brightest. It is EXTREMELY bright, which is exactly what I want to maximize my visibility while riding. My wife has followed me with the three lights on during the day, and tells me that the S100 is way more visible and eye catching. I own two other Magnus products which I use regularly, the Vision II bike light, and the Atlas headlamp, and they are both excellent. Magnus Gear is serious when they say lifetime warranty. My first product of theirs was a Vision I bike light, and I used it for a couple years and loved it, but one day I dropped it on a concrete floor and damaged the control switch. I contacted Magnus asking if I could buy a replacement switch, thinking that it would not be covered by warranty since the damage was my own fault. To my surprise and pleasure, they quickly sent me a note apologizing for the problem with the light, and I received a new Vision II headlight a couple days later. BTW, the Vision II makes an excellent flashlight -- super bright, easy to carry and long lasting battery -- and I use it on night time walks in the unlighted rural area where I live.

### ⭐⭐⭐ and depend on tail light flashers for good, be-seen illumination while on the street
*by J***H on April 16, 2017*

I bicycle 2 miles every evening from the local BART train station to home after dark, and depend on tail light flashers for good, be-seen illumination while on the street. I can recommend this Magnus flasher highly. Its a great value compared to the Cateye Rapid X series costing twice as much, and appears to be just as well made. It provides as much illumination as my Rapid X2 flasher and isvery easy to use. It also has the great feature of the charging light going from red to green after charging is complete. By contrast, the Rapid X flasher's red charging light just simply turns off when charging is complete, leaving you without positive confirmation that the charging cycle is complete. This is a 3 month follow-up report on the Magus Tail Light that I use nightly on my commute home. It failed!! Upon arriving home 3 evenings ago, I discovered that the Magnus had stopped flashing sometime prior to my arrival. When I removed it from my bicycle and shook it, it started flashing again momentairly and then stopped. It is too unreliable to use any longer., and could put me in danger if I rely on it to be seen by auto traffic. (By contrast, the Cateye Rapid X flashers that I also use continue to function perfectly.) No, I would not purchase this product again until Magnus repairs the design flaw. Note: this is the 2nd Magnus flasher to fail on me, and Magnus had been very generous in replacing the 1st without questions or any charge.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-26*