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- Free Shipping:📦
Shipping Info
- US Warehouse In-stock: 3–4 business days
- 🌍International Shipping (if US out of stock): 7–10 business days
🚲 Bicycle Shipping
Delivery Times:
- Standard: 40–60 business days
- Expedited: 18–20 business days
Shipping Fees:
- Small Bikes: $20 (Standard) | $70 (Expedited)
- Large Bikes: $100 (Standard) | $250 (Expedited)
No extra taxes. Choose the option that works best for you.
We offer a 30-day hassle-free return and exchange policy starting from the date you receive your item. To be eligible, products must be unworn, unused, with tags attached, in original packaging, and accompanied by proof of purchase. If the item is defective, damaged, or incorrect, we cover the return shipping cost; for size or personal preference returns, the customer is responsible for shipping fees. Please inspect your order within 72 hours and contact us for any issues. EU customers have a 14-day no-questions-asked return right. Refunds will be processed within 10 business days after we receive and inspect your return. Please contact customer service before returning items and send returns to the designated address; unauthorized returns will not be accepted. For questions, email service@rockbrosbike.us.
At ROCKBROS, we offer a worry-free 1-year warranty to ensure your satisfaction. Whether it's a defect or product issue, simply reach out to us at service@rockbrosbike.us with your order details. We'll handle the rest to make sure your experience is smooth and hassle-free.

Product FEATURES


| Feature | Details |
|---|---|
| Color | Black, Red, Blue |
| Size | One Size |
| Brand | ROCKBROS |
| Material | ABS + PC |
| Style | Modern |
| Mounting Type | Handlebar Mount |
| Min Compatible Size | 22.2 mm |
| Dimensions (Package) | 3.86" x 1.85" x 1.85" |
| Weight (Package) | 0.04 kg |
| Warranty | 1-Year Warranty |
| Model Name | 34210002001/US |
| Suggested Users | Unisex-Adult |
| Included Components | Horn |
| Sport Type | Cycling |






- 120dB BIKE HORN: 120 dB is enough to alert the walkers or slow bikers you are approaching, no more yelling on the road, perfect for daily commuting.
- EASY INSTALLATION: Easy to install and protect bike paint with an elastic rubber strap, no extra tools are needed. Firmly attached to the frame even on the bumps and extreme roads. High-elastic straps help to mount on different diameter handlebars.
- SMALL & LIGHT: Small and portable, weighing 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.
- HORN DESIGN: Just press to sound, simple and quick to let passersby know. The trumpet shape is stylish and loud, IPX4 level waterproof, and not afraid of light rain during riding, but do not recommend use or putting under the heavy rain.
- AFTER-SALE SERVICE: We promise customers enjoy 30 Day Money Back Guarantee. Customers can return or get refund in case the purchasing is not satisfactory for any reason. Our 7*24 hour customer service is at your service.
| Color | ?Blue |
|---|---|
| Size | ?One Size |
| Brand | ?ROCKBROS |
| Material | ?ABS+PC |
| Style | ?Electric |
| Mounting Type | ?Handlebar Mount |
| Manufacturer | ?ROCKBROS |
| Item Package Dimensions L x W x H | ?3.98 x 2.05 x 1.85 inches |
| Package Weight | ?0.05 Kilograms |
| Brand Name | ?ROCKBROS |
| Warranty Description | ?1-year warranty |
| Model Name | ?34210002 |
| Suggested Users | ?unisex-adult |
| Included Components | ?horn |


| Feature | Details |
|---|---|
| Color | Black, Red, Blue |
| Size | One Size |
| Brand | ROCKBROS |
| Material | ABS + PC |
| Style | Modern |
| Mounting Type | Handlebar Mount |
| Min Compatible Size | 22.2 mm |
| Dimensions (Package) | 3.86" x 1.85" x 1.85" |
| Weight (Package) | 0.04 kg |
| Warranty | 1-Year Warranty |
| Model Name | 34210002001/US |
| Suggested Users | Unisex-Adult |
| Included Components | Horn |
| Sport Type | Cycling |






- 120dB BIKE HORN: 120 dB is enough to alert the walkers or slow bikers you are approaching, no more yelling on the road, perfect for daily commuting.
- EASY INSTALLATION: Easy to install and protect bike paint with an elastic rubber strap, no extra tools are needed. Firmly attached to the frame even on the bumps and extreme roads. High-elastic straps help to mount on different diameter handlebars.
- SMALL & LIGHT: Small and portable, weighing 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.
- HORN DESIGN: Just press to sound, simple and quick to let passersby know. The trumpet shape is stylish and loud, IPX4 level waterproof, and not afraid of light rain during riding, but do not recommend use or putting under the heavy rain.
- AFTER-SALE SERVICE: We promise customers enjoy 30 Day Money Back Guarantee. Customers can return or get refund in case the purchasing is not satisfactory for any reason. Our 7*24 hour customer service is at your service.
| Color | ?Blue |
|---|---|
| Size | ?One Size |
| Brand | ?ROCKBROS |
| Material | ?ABS+PC |
| Style | ?Electric |
| Mounting Type | ?Handlebar Mount |
| Manufacturer | ?ROCKBROS |
| Item Package Dimensions L x W x H | ?3.98 x 2.05 x 1.85 inches |
| Package Weight | ?0.05 Kilograms |
| Brand Name | ?ROCKBROS |
| Warranty Description | ?1-year warranty |
| Model Name | ?34210002 |
| Suggested Users | ?unisex-adult |
| Included Components | ?horn |










