---
product_id: 49287906
title: "Aerzetix: P21W 12V Reverse Bip-Bip Rear Alarm Car Warning Buzzer Lamp"
brand: "aerzetix"
price: "¥175"
currency: JPY
in_stock: false
reviews_count: 6
url: https://www.desertcart.jp/products/49287906-aerzetix-p21w-12v-reverse-bip-bip-rear-alarm-car-warning
store_origin: JP
region: Japan
---

# Aerzetix: P21W 12V Reverse Bip-Bip Rear Alarm Car Warning Buzzer Lamp

**Brand:** aerzetix
**Price:** ¥175
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Aerzetix: P21W 12V Reverse Bip-Bip Rear Alarm Car Warning Buzzer Lamp by aerzetix
- **How much does it cost?** ¥175 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/49287906-aerzetix-p21w-12v-reverse-bip-bip-rear-alarm-car-warning)

## Best For

- aerzetix enthusiasts

## Why This Product

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

## Description

Beep alarm reversing signal light bulb High Fidelity Sound Bulb P21 W 12 V alarm lamp for trucks. C4758 – C13

## Features

- P21 W 12 V
- "beep beep"

## Images

![Aerzetix: P21W 12V Reverse Bip-Bip Rear Alarm Car Warning Buzzer Lamp - Image 1](https://m.media-amazon.com/images/I/61d-W11W5lL.jpg)

## Customer Reviews

### ⭐⭐⭐ 







  
  
    1 is OK, 2 not so much
  

*by A***Y on Reviewed in the United Kingdom on 19 October 2019*

I bought 2 of these so that both reversing bulbs would match on my van. Turns out that the sequencing is slightly different on each bulb so instead of them 'beeping' at the same time, they are out of sync and just make an irritating jumble of noise

### ⭐⭐⭐⭐ 







  
  
    Does what it does.
  

*by P***D on Reviewed in the United Kingdom on 27 April 2020*

Works as described.Not loud enough to hear from inside the cab, but can be heard from a good distance behind the vehicle.

### ⭐⭐⭐⭐⭐ 







  
  
    Not all reversing bulbs are the same
  

*by P***D on Reviewed in the United Kingdom on 3 November 2020*

My mistake, I thought that all reversing light bulbs where like an indicator bulb, not so, Toyota auris has to be different.Great looking product, could not use it on this occasion

---

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**Shop now:** [https://www.desertcart.jp/products/49287906-aerzetix-p21w-12v-reverse-bip-bip-rear-alarm-car-warning](https://www.desertcart.jp/products/49287906-aerzetix-p21w-12v-reverse-bip-bip-rear-alarm-car-warning)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-25*