---
product_id: 1097803
title: "P3 P0550 Water Meter"
brand: "save a drop"
price: "¥5267"
currency: JPY
in_stock: true
reviews_count: 13
category: "Save A Drop"
url: https://www.desertcart.jp/products/1097803-p3-p0550-water-meter
store_origin: JP
region: Japan
---

# Measures water flow to 0.1 gal Tracks single & total watering volume Rugged waterproof housing P3 P0550 Water Meter

**Brand:** save a drop
**Price:** ¥5267
**Availability:** ✅ In Stock

## Summary

> 💧 Save Every Drop, Grow Every Dream

## Quick Answers

- **What is this?** P3 P0550 Water Meter by save a drop
- **How much does it cost?** ¥5267 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1097803-p3-p0550-water-meter)

## Best For

- save a drop enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Smart Watering:** Optimize your garden’s health while conserving water and lowering bills.
- • **Dual Volume Tracking:** Monitor both individual watering sessions and cumulative usage effortlessly.
- • **Trusted by Road Warriors:** Highly rated by RV enthusiasts for precise water management on the go.
- • **Built to Brave the Elements:** Durable, waterproof design ensures reliable outdoor performance season after season.
- • **Precision Hydration Control:** Eliminate guesswork with 0.1-gallon accuracy for every drop.

## Overview

The P3 P0550 Water Meter is a compact, rugged device designed to accurately measure water flow from your hose with 0.1-gallon precision. Featuring an easy-to-read LCD, it tracks both single watering events and total water usage, helping you avoid overwatering and conserve resources. Its waterproof housing ensures durability for outdoor use, making it ideal for gardeners and RV users alike who demand precise, eco-friendly water management.

## Description

It is widely accepted that talking to your plants is great for their health. If they could speak to you, what would they say? Probably that they're being over-watered. Meet your garden's wants and needs with the Save A Drop Meter. Over-hydrating plants and shrubs can diminish plant health. Use the easy to read meter to measure how much water is flowing out of the hose. While in use, it calculates both accumulative watering volume and singular waterings, the amount of fluid used in between when you start and stop the hose. Take "guesstimates" out of the equation when watering your lawn. Attach the gauge to your sprinkler and know when the time is right to turn your hose on and off. Being aware of water consumption benefits your home, garden, greenhouse, and the planet. The Save A Drop Meter is an important tool to use when keeping your home happy and healthy. Features: Prevents over-watering , Easy to read LCD display ,Calculates both single-use and total water consumption, Accurately measures to 1/10th of a gallon, Rugged waterproof housing

Review: Very Helpful When Flushing Motorhome Black Tanks - I carry this in my motorhome and mainly use it when dumping tanks. I like to fill and flush the black tank and this is handy for getting enough water to get a good flush without risking overfilling the tank (I did that one time... had water coming out of the roof vent). Works real well.
Review: Great little unit that is accurate.......... - Purchased prior to taking a RV trip to Alaska for 4 months. I wanted to have accurate readings while filling my freshwater tank because I found the dummy lights in most RV's are not accurate at all. It worked perfectly for a while but then it actually came apart on the female connection end. Well, it's out of warranty but I'm now home and called the manufacturer through desertcart to see if they would still replace it for me. Without hesitation they said "No Problem" they would send me a new one. They indicated that I probably overtighten it on the hose which likely caused it to come apart. In any case, what GREAT service and understanding. This is a great little product and would highly recommend for all RV'ers on the road............

## Features

- Use the easy to read meter to measure how much water is flowing out of the hose
- it calculates both accumulative watering volume and singular waterings
- Take "guesstimates" out of the equation when watering your lawn
- Accurately Measures To 1/10th Of A Gallon
- Rugged, Waterproof Housing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0058EOC5M |
| Batteries | 1 CR2 batteries required. (included) |
| Best Sellers Rank | #13,330 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #25 in Watering Timers |
| Brand | SAVE A DROP |
| Customer Reviews | 4.2 4.2 out of 5 stars (4,210) |
| Department | Electronics |
| Global Trade Identification Number | 00751549005505 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.88 ounces |
| Item dimensions L x W x H | 4 x 2 x 3 inches |
| Item model number | P0550 |
| Manufacturer | P3 International |
| Material | Durable Plastic, Rubber |
| Product Dimensions | 4 x 2 x 3 inches |
| UPC | 731215322631 231894805376 115971574563 014444886281 881110016828 115970695962 172304216651 132017979847 807034919229 182682312456 805095150605 069060216066 163121122669 891208600945 168141211331 151903475485 807320370574 041114536924 680808386638 601000266443 079854871791 168141406058 086011661683 021112434248 809390037593 001910641772 172302655964 071090179969 619091188513 012304191803 2233757303… |

## Product Details

- **Brand:** SAVE A DROP
- **Item Weight:** 2.88 ounces
- **Item dimensions L x W x H:** 4 x 2 x 3 inches
- **Material:** Durable Plastic, Rubber

## Images

![P3 P0550 Water Meter - Image 1](https://m.media-amazon.com/images/I/61yytKuk8AL.jpg)
![P3 P0550 Water Meter - Image 2](https://m.media-amazon.com/images/I/7132VSyAxkL.jpg)
![P3 P0550 Water Meter - Image 3](https://m.media-amazon.com/images/I/71ys9D8QDHL.jpg)
![P3 P0550 Water Meter - Image 4](https://m.media-amazon.com/images/I/71oTSo6FsBL.jpg)
![P3 P0550 Water Meter - Image 5](https://m.media-amazon.com/images/I/71NVEn4dILL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: I can't figure out why mine always resets to zero if I don't use it for a while?**
A: Its supposed to turn off, and reset to zero after a period on non use. The top reading will reset to zero, the bottom reading will not, and is cumulative.

**Q: Has anyone tried using it to measure the water used in showering?  It looks like it might be able yo attach between shower wall pipe& shower head.**
A: If you're thinking of placing in hard plumbing, I'ld forget it. For the money, lets face it. It's not of high quality nor percise. 25 gallons on it is more like 28 to 30 gallons. For what I use it for, I get-a-long just fine. Hope this helps anyone out that's interested.

**Q: Is it safe to use to monitor drinking water usage?**
A: Safe?  ABSOLUTELY...  This is what we, basically, use this item for.  I connect this to my motorhome as I'm filling my freshwater tank so I know how much water I'm putting into the system.  TYPICALLY, I only want to carry a small amount of water while drive (say 10 gallons) and then fill up when I get to my destination.  This makes it ***VERY EASY*** to know what I've put into my tank!

**Q: How do you turn it off?**
A: The meter is based on flow only and does not have an "on-off" valve. You have to turn it off at the faucet or you could install a simple ball valve prior to the inlet of the meter and use that to control flow. It does not have an automatic "flow" shut off.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very Helpful When Flushing Motorhome Black Tanks
*by C***N on July 9, 2025*

I carry this in my motorhome and mainly use it when dumping tanks. I like to fill and flush the black tank and this is handy for getting enough water to get a good flush without risking overfilling the tank (I did that one time... had water coming out of the roof vent). Works real well.

### ⭐⭐⭐⭐⭐ Great little unit that is accurate..........
*by J***. on October 12, 2022*

Purchased prior to taking a RV trip to Alaska for 4 months. I wanted to have accurate readings while filling my freshwater tank because I found the dummy lights in most RV's are not accurate at all. It worked perfectly for a while but then it actually came apart on the female connection end. Well, it's out of warranty but I'm now home and called the manufacturer through Amazon to see if they would still replace it for me. Without hesitation they said "No Problem" they would send me a new one. They indicated that I probably overtighten it on the hose which likely caused it to come apart. In any case, what GREAT service and understanding. This is a great little product and would highly recommend for all RV'ers on the road............

### ⭐⭐⭐⭐ Functional and practical water meter
*by P***T on August 10, 2016*

This water flow meter is quite basic, but seems to work well in 'casual' applications where high accuracy is not required. The meter is equipped with a female 3/4" hose fitting on top and a male 3/4" hose fitting on the bottom. Actually, as some have reported elsewhere, the male thread is not tapered at all and some might view this as a problem, but I think in the majority of applications for which this unit is designed, this is an appropriate thread. The meter has two displays that can read in either gallons or liters. The display reads whole numbers to three digits, plus one decimal position. Both displays read the same number of gallons/liters that have passed through the meter since it was reset. The top display can be reset by briefly pressing the left side button, while the lower display can be reset by holding in the right side button for a few seconds. This way, you can use the top display to record the amount of water that has passed through during an episode (e.g. during one watering session of a garden), after which you press the left button and reset that display, while leaving the lower display still showing its reading. The lower display can then act as an accumulated water reading that you reset less often (this is why the meter requires you to hold the button for a longer time, to prevent inadvertent resetting). I should note that this meter does NOT show flow RATE (e.g. 'gallons per hour'). It simply shows how many gallons/liters have passed through it since it was last reset, irrespective of time. If you want to know RATE, you can allow the meter to measure water over a fixed period of time, perhaps for one minute or one hour. The meter is powered by a single CR2032 wafer battery, which can be accessed by unscrewing the water-proof rear cover; it has a slot that fits the edge of a coin to unscrew it, and an O-ring seals the meter innards. The meter is intended for outdoor use, and is water resistant against rain and splashes. It appears that a small brass pinwheel is used to do the measurement, so any debris that can get stuck around the wheel could prevent accurate measurement. It is difficult to see this part clearly, so I am not certain of the details. To save battery power, the display blanks out if no water has flowed in a while. As soon as water flows again, the display turns back on automatically. I used this meter to record gallons per minute (I reset the display, ran the water for one minute, and got the 'gpm' reading from the display) in order to do a water capacity calculation for a process that would utilize the water from a spigot in my home. It worked as expected.

## Frequently Bought Together

- P3 P0550 Water Meter
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*