ROCKBROS Electra – 90 dB Electric Bike Horn & Bell

Loud & Effective Alert

Delivering up to 90 dB of sound, this electric bike bell is loud enough to clearly alert pedestrians and other riders during daily commuting. It features 3 selectable ringtones—long press for 3–5 seconds to switch between sounds.

(Tip: For best performance, replace the battery if sound output decreases after extended storage or transportation.)

Fast & Tool-Free Installation

Installs and removes easily with no tools required. The high-elastic silicone mount adjusts to fit most handlebar diameters, making it compatible with a wide range of bikes.

Compact & Lightweight Design

Weighing just 51 g, this mini bike horn is small, portable, and ideal for road bikes, mountain bikes, city bikes, kids’ bikes, and more. Easily store it in a pocket or bag when not in use.

Durable Silicone Housing

The soft silicone cover protects your bike’s finish and provides water-resistant and dust-resistant performance, helping extend the product’s lifespan.

Easy Battery Replacement

Powered by a CR2032 lithium battery, which is simple to replace when needed.

Key Features:

• 90 dB sound output

• Water-resistant design

• 3 sound modes

• CR2032 replaceable battery