---
product_id: 493152670
title: "ROCKBROS Electric Bike Horn 120dB IPX4 Lightweight"
brand: "rockbros"
price: "$29.39"
currency: USD
in_stock: true
category: "Rockbros"
url: https://www.desertcart.us/products/493152670-rockbros-electric-bike-horn-120db-ipx4-lightweight
store_origin: US
region: United States of America
---

# 34g ultra-lightweight IPX4 water-resistant 120dB max volume ROCKBROS Electric Bike Horn 120dB IPX4 Lightweight

**Brand:** rockbros
**Price:** $29.39
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Make your presence heard—loud, light, and unstoppable!

## Quick Answers

- **What is this?** ROCKBROS Electric Bike Horn 120dB IPX4 Lightweight by rockbros
- **How much does it cost?** $29.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/493152670-rockbros-electric-bike-horn-120db-ipx4-lightweight)

## Best For

- rockbros enthusiasts

## Why This Product

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

## Key Features

- • **Featherlight at Just 34g:** Barely there on your handlebar, perfect for all bike types.
- • **Replaceable CR2032 Battery:** Long-lasting power with hassle-free battery swaps—no frequent removals.
- • **Tool-Free Elastic Strap Mount:** Install in seconds without scratching your bike’s finish.
- • **Weather-Ready IPX4 Protection:** Ride confidently through light rain without missing a beat.
- • **Command Attention with 120dB Loudness:** Cut through city noise effortlessly and keep your ride safe.

## Overview

The ROCKBROS Electric Bike Horn delivers a powerful 120dB alert in a sleek, ultra-light 34g design. Its IPX4 water resistance and tool-free elastic strap mount make it perfect for all weather and bike types. Featuring a replaceable CR2032 battery, this horn ensures reliable, hassle-free use for daily commuters and cycling enthusiasts alike.

## Description

desertcart.com: ROCKBROS Electric Bike Horn 120dB IPX4 Lightweight （Black） | Loud Alert, Replaceable Battery, 34g Ultra-Light, Elastic Strap Tool-Free Install, IPX4 Waterproof : Sports & Outdoors

## Features

- 120dB BIKE HORN: Max volume is 120db, enough to alert the walkers or slow bikers you are approaching, no more yelling on the road, good for daily commuting. Built-in CR2032 replaceable battery, no need to frequently remove from the bike after one replace.
- FAST INSTALLATION: Easy to install and protect bike paint with elastic rubber strap, no extra tools needed. High-elastic straps help to mount on different diameter handlebars.Firmly attached to the frame even on the bumps and extreme roads.
- SMALL & PORTABLE: Small and light, weight only 34g, it takes up less space on the handlebar and can be used on road/mountain bikes, e-bikes, dirt bikes, folding bikes, kids bikes or scooters. Three colors--Black/Red/Blue is available to match your bike.
- MINIMALIST DESIGN: Just press to sound, simple and quick to let passersby know. The trumpet shape is stylish and loud, IPX4 level waterproof, not afraid of light rain during riding,but do not recommend to use or put under the heavy rain.
- Any using question or problem please let us know, we will help you to figure out and solve it.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BF5472LN |
| Best Sellers Rank | #85,651 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #38 in Bike Horns |
| Brand Name | ROCKBROS |
| Color | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (487) |
| Included Components | horn |
| Item Dimensions L x W x H | 2.9"L x 1.7"W x 1.7"H |
| Item Highlight | Loud Alert, Replaceable Battery, 34g Ultra-Light, Elastic Strap Tool-Free Install, IPX4 Waterproof |
| Item Type Name | Electric bike horn |
| Item Weight | 0.04 kg |
| Manufacturer | ROCKBROS |
| Manufacturer Part Number | 34210002001/US |
| Material Type | ABS+PC |
| Maximum Compatible Size | 31.8 millimeters |
| Minimum Compatible Size | 22.2 millimeters |
| Mounting Type | Handlebar Mount |
| Number of Items | 1 |
| Product Style | Modern |
| Size | One Size |
| Unit Count | 1 Count |
| Warranty Description | 1-year warrantly |

## Product Details

- **Brand:** ROCKBROS
- **Color:** Black
- **Material:** ABS+PC
- **Size:** One Size
- **Style:** Modern

## Images

![ROCKBROS Electric Bike Horn 120dB IPX4 Lightweight - Image 1](https://m.media-amazon.com/images/I/61BP-r3RMoL.jpg)

## Available Options

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

## Questions & Answers

**Q: Hola Donde puedo escuchar el sonido de la bocina?**
A: Dear customer,
Because this electric bike horn is charged, there will be a plastic sheet on the batter. When using it, you need to unplug it first, and then press the switch button to hear the sound.
Thank you for your question, please feel free to contact us if you have any questions, we will try our best to answer you!

## Frequently Bought Together

- ROCKBROS Electric Bike Horn 120dB Adults Kids Bike Horn Alarm IPX4 Waterproof Electronic Bicycle Horns for Handlebars Ebike Scooter Horn
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**Shop now:** [https://www.desertcart.us/products/493152670-rockbros-electric-bike-horn-120db-ipx4-lightweight](https://www.desertcart.us/products/493152670-rockbros-electric-bike-horn-120db-ipx4-lightweight)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-14*