USB Rechargeable Bicycle Turn Signal with Horn and 900mAh Battery

This USB charging bicycle turn signal with horn is a rear-facing cycling accessory designed to combine direction indication and audible warning in one unit. The model 1820 steering taillight uses 18-SMD and 14-SMD lamp beads and is operated by a supplied wireless remote control, so the rider can signal turns and sound the horn without reaching for the handlebar-mounted light itself. The housing measures 9.4 x 3.2cm and is finished in black. A built-in 900mAh lithium battery is recharged through the included USB cable, which means the unit does not rely on disposable batteries. The package also contains a turn signal base, two silicone straps, and an instruction manual. This description is based on the stated product data only; no waterproof rating, runtime, brightness, or compatibility figures are given in the source.

Features and Construction

The core construction details are the lamp bead types, the built-in battery, and the mounting hardware. These determine how the unit is powered and attached to the bike, and they are the main facts available for this model.

Lamp Bead Types

The turn signal uses 18-SMD and 14-SMD lamp bead types. SMD refers to surface-mounted LED components, and the two figures indicate different bead counts or groupings within the light unit. The source data does not state brightness in lumens, beam angle, or flash patterns, so those details cannot be confirmed. What can be confirmed is that the light is built around SMD LEDs and is intended as a rear steering taillight for indicating turns.

Battery and Charging

A built-in 900mAh lithium battery powers the unit, and charging is done through the supplied USB cable. This removes the need to buy and replace disposable batteries, which is a practical consideration for regular cyclists. The source data does not state charging time, runtime per charge, or battery lifespan. The 900mAh capacity is the only battery figure provided, and it should be treated as the stated capacity rather than a performance guarantee.

Mounting Hardware

The package includes a turn signal base and two silicone straps. Silicone straps are flexible and are used to secure the base to the bike, allowing the unit to be fitted without tools in many cases. The exact tube diameter range is not stated, so compatibility with a specific seatpost or frame tube cannot be confirmed from the source. The base is specific to this turn signal model.

Uses and Placement

The unit is intended for rear mounting on a bicycle, where it can indicate turns and sound a horn. The wireless remote is central to both functions, keeping operation within reach of the handlebars.

Event or Professional Use

For group rides, club cycling, or organised events, a turn signal with a horn can help communicate direction changes and presence to others. The remote control allows the rider to operate the indicators and horn without moving a hand far from the bars. The black housing and compact size suit a rear-facing position. No specific event certifications or professional standards are claimed in the source data.

Everyday Home Use

For daily commuting, shopping trips, or leisure rides, the turn signal and horn functions address two common safety tasks: showing which way you intend to turn and giving an audible warning when needed. The USB-rechargeable battery means the unit can be topped up at home or at a desk using the supplied cable. The silicone straps allow fitting to the bike and removal for charging, depending on the setup.

Benefits and Buying Value

The practical value of this product lies in combining two functions in one rear unit and using a rechargeable battery. The supplied mounting parts and remote control mean the main components are included.

Reuse and Low Maintenance

Because the battery is built in and rechargeable via USB, the unit avoids the ongoing cost and waste of disposable batteries. There are no stated maintenance requirements beyond charging and keeping the unit clean. The silicone straps are a wear item but are included in the pack. No waterproof rating is given, so it is reasonable to keep the unit protected from heavy rain and to avoid submerging it.

Why Choose This Product

This model 1820 steering taillight is a reasonable choice for cyclists who want turn indication and a horn in a single rear-mounted unit with a wireless remote. It provides 18-SMD and 14-SMD lamp bead types, a built-in 900mAh lithium battery, USB charging, and a compact 9.4 x 3.2cm black housing. The package includes the turn signal, remote control, turn signal base, two silicone straps, USB cable, and instruction manual. Buyers who need confirmed waterproofing, specific runtime, or brightness figures should note that those details are not provided in the source data.