TWOOC T-002 Electronic Horn 110-120db USB Rechargeable Bicycle Charging Speaker with 3 Sound Modes

Whether you are commuting through busy city streets or enjoying a weekend ride, being heard is essential for safety. The TWOOC T-002 electronic horn combines a powerful 110-120db output with three distinct sound modes — whistle, siren, and trumpet — so you can choose the right alert for any situation. Unlike standard single-tone bells, this horn offers versatility and a far louder projection. Its compact size and lightweight design (approximately 40 grams) mean it mounts easily on most handlebars without adding bulk. The built-in Li-polymer battery charges via USB, so you never need to buy replacements. Water splash protection adds confidence in light rain, though the unit should not be submerged.

Features and Construction

This electronic horn is built around practical, rider-focused features. The main unit and wired switch are constructed from durable plastic and electronic components, with a rubber strap system for tool-free attachment. The horn fits handlebar tubes 22-31.8mm in diameter, and the switch fits tubes 18-24mm, making it compatible with a wide range of bicycle handlebars. The spiral switch wire extends from 15 to 30cm, providing flexibility in placement on the handlebar.

Sound Performance

The horn delivers an output of 110-120db, loud enough to cut through traffic noise. Three sound modes — whistle, siren, and trumpet — can be selected using a dedicated button on the wired switch. A second button controls the on/off switch, keeping operation simple and focused. This multi-mode capability allows riders to signal differently depending on the environment, from a quick alert to a more urgent warning.

Battery and Charging

A 280mAH Li-polymer battery powers the horn, recharged via the included USB cable. Full charging takes approximately 1.5 hours and supports roughly 2000 horn rings per charge, meaning very low maintenance for regular riders. The battery is embedded in the horn unit, so no separate battery pack or wiring is needed.

Mounting and Installation

Mounting is tool-free: simply wrap the rubber strap around the handlebar tube and secure it. The horn mounts forward on the handlebar, taking up less space and keeping the riding area clear. The switch mounts separately on a different section of the handlebar, with the spiral cable keeping the connection tidy and stretchable. This design makes installation quick and removal equally simple when storing the bike.

Uses and Placement

The TWOOC T-002 is designed for bicycles, but its splash-proof build and versatile sound modes make it suitable for a range of uses where a loud, portable alert is needed. The compact size and strap mounting mean it can be attached to other tube-framed equipment such as scooters, wheelchairs, or garden machinery, provided the tube diameter is within 22-31.8mm.

Cycling in Traffic

In urban environments, being heard by drivers, pedestrians, and other cyclists is critical. The 110-120db output ensures your signal carries over engine noise and wind. The trumpet mode is ideal for general alerts, while the siren can be used in higher-risk situations. The forward-facing horn mount directs sound where it is needed most.

Recreational Riding

On group rides or off-road trails, the whistle mode provides a friendly but clear tone. The tool-free mount means the horn can be easily transferred between bikes or removed when not needed. The splash-proof rating gives peace of mind in damp conditions without requiring a full waterproof enclosure.

Benefits and Buying Value

This electronic horn replaces the need for disposable battery-powered units or weak bells. The rechargeable Li-polymer battery and USB charging eliminate ongoing costs and waste. The long battery life (2000 rings per charge) means you can go weeks or months between charges depending on usage. The rubber strap mount avoids damaging handlebar tape or grips and holds securely on standard tube sizes.

Low Maintenance and Durability

The splash-proof housing protects against rain and road spray, reducing the risk of water damage during normal riding. The spiral switch wire is designed to withstand repeated flexing. With no exposed batteries to corrode and a simple two-button interface, the horn requires minimal upkeep beyond keeping the USB port dry when not charging.

Why Choose This Product

The TWOOC T-002 offers a practical balance of loud output, multiple sound modes, and convenient USB recharging in a compact, lightweight package. Its tool-free mounting and splash-proof construction make it a reliable choice for daily commuters and casual riders alike. Available in five colours — black, blue, green, powder, and red — it can match your bike’s style or personal preference.