---
product_id: 725081320
title: "Compact Breathing Exercise Device for Lungs Made in USA Respiratory Lung Exerciser Device with Adjustable Valve - Diaphragm & Core Trainer Device for Athletes o2 Portable Breathing Trainer"
brand: "nemstar"
price: "R$303"
currency: BRL
in_stock: true
reviews_count: 13
category: "Nemstar"
url: https://www.desertcart.com.br/products/725081320-compact-breathing-exercise-device-for-lungs-made-in-usa-respiratory
store_origin: BR
region: Brazil
---

# Adjustable air resistance for personalized training Compact, durable USA-made design Strengthens respiratory & core muscles Compact Breathing Exercise Device for Lungs Made in USA Respiratory Lung Exerciser Device with Adjustable Valve - Diaphragm & Core Trainer Device for Athletes o2 Portable Breathing Trainer

**Brand:** nemstar
**Price:** R$303
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate every breath, own every moment.

## Quick Answers

- **What is this?** Compact Breathing Exercise Device for Lungs Made in USA Respiratory Lung Exerciser Device with Adjustable Valve - Diaphragm & Core Trainer Device for Athletes o2 Portable Breathing Trainer by nemstar
- **How much does it cost?** R$303 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/725081320-compact-breathing-exercise-device-for-lungs-made-in-usa-respiratory)

## Best For

- nemstar enthusiasts

## Why This Product

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

## Key Features

- • **Portable Powerhouse:** Compact, lightweight design fits seamlessly into any workout or travel routine.
- • **Core & Breath Synergy:** Tone your diaphragm and abs simultaneously for enhanced athletic endurance.
- • **Built to Last, Made in USA:** Durable plastic frame engineered for consistent performance and longevity.
- • **Precision Resistance Control:** Fine-tune your breathing challenge with an easy-to-use adjustable valve.
- • **Breathe Stronger, Perform Longer:** Boost lung capacity and stamina with adjustable resistance tailored to your progress.

## Overview

The Nemstar Compact Breathing Exercise Device is a portable, USA-made respiratory trainer designed to strengthen lung and core muscles. Featuring an adjustable air resistance valve, it allows athletes and fitness enthusiasts to customize their breathing workouts, enhancing endurance and overall performance. Its lightweight, durable plastic construction ensures long-lasting use, making it an essential tool for anyone serious about optimizing breath control and stamina.

## Description

desertcart.com : Compact Breathing Exercise Device for Lungs Made in USA Respiratory Lung Exerciser Device with Adjustable Valve - Diaphragm & Core Trainer Device for Athletes o2 Portable Breathing Trainer : Sports & Outdoors

Review: Quality Item and Easy to Use - I found out about these Breathing Exercise Devices after reading an article in Martha Stewart publication. I reviewed many of the devices in a variety of price ranges and was willing to spend up to $60.00 if they really helped with stress and blood pressure. After reading reviews I settled on this product since it was going to offer the same benefits as the higher priced ones and will most likely last longer. I am not at all disappointed, it is very sturdy and comfortable to use. I looked at a YouTube demonstration before using it. It definitely changes your breathing pattern and help you to take deeper breaths. I will purchase this device three times over if need be but this will last for some time. You feel a sense of relaxation after using this device and puts you in a meditative mood.
Review: Mostly works well--could use more adjustment granularity - This is not a complicated device and could be built by someone with access to and knowledge of OTC plumbing parts. But the convenience of the pre-assembled device for the price is what sold me. I have used it many times and I do feel that I am improving my breathing capacity. (For disclosure: I do not have any diagnosed breathing problems and am using this strictly on a program of self-improvement. You should consult your own professional medical personnel before embarking on anything like an exercise program.) This is a very compact device and is easy to use. My only minor complaint is that it would be nice if the valve had a wider range of efficacy--there is only a very small range where you go from totally shut off to wide open yet there is a range where the valve is either completely open or closed where turning it does not affect the flow rate. This is easy enough to work around but could be considered for a design improvement. Also, there could be included a scale so that you could easily repeat a setting and/or track progress as the resistance is slowly increased over time.

## Features

- 100% Matte
- EFFECTIVE LUNG EXERCISER DEVICE: Advanced lung trainer device designed to strengthen respiratory muscles; enhances breathing and efficiency for athletes, runners and fitness enthusiasts; improves overall breathing performance over time.
- AMPLIFY YOUR ENDURANCE: Elevate your workout routine with our breath trainer with adjustable resistance. Seamlessly integrate this respiratory trainer into your daily regimen to enhance your breathing and experience stamina and performance over time.
- TRAIN & TONE YOUR ABS: Our o2 lung exerciser device not only helps you tone your core muscles but also helps with your breathing abilities. Perfect lung trainer for athletes and workout accessories for men or women on the go!
- ENJOY ADJUSTABLE RESISTANCE: Experience personalized training with our Nemstar deep lung trainer for athletes. Our breath trainer device has adjustable pressure knob so you can find the resistance level that suits your needs and gradually increase it as you progress in your training journey.
- ENHANCE YOUR OVERALL PERFORMANCE: Train your respiratory muscles and abs with our breathing exerciser device, targeting an increased athletic ability. By improving your breath endurance, you can positively impact your athletic abilities and daily activities with our breathing device lung fitness trainer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B089DPMRWH |
| Best Sellers Rank | #78,448 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #50 in Breathing Trainers & Monitors #57 in Rowing Machines |
| Brand | Nemstar |
| Brand Name | Nemstar |
| Color | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (791) |
| Date First Available | March 22, 2022 |
| Frame Material | Plastic |
| Item Dimensions LxWxH | 0.39 x 0.39 x 0.39 inches |
| Item Package Dimensions L x W x H | 4.76 x 3.39 x 2.32 inches |
| Item Weight | 0.5 Ounces |
| Manufacturer | Nemstar Sports |
| Material | Plastic |
| Maximum Weight Recommendation | 0.1 Ounces |
| Model Name | Breathing Trainer |
| Number of Items | 1 |
| Package Weight | 0.07 Kilograms |
| Part Number | NS-BT-1EA-0 |
| Product Dimensions | 1"D x 1"W x 2"H |
| Resistance Mechanism | Air |
| Size | Small |
| Special Feature | Adjustable Resistance |
| Tension Level | Adjustable |
| UPC | 860003660508 |

## Product Details

- **Brand:** Nemstar
- **Color:** Black
- **Frame Material:** Plastic
- **Item Weight:** 0.5 Ounces
- **Maximum Weight Recommendation:** 0.1 Ounces
- **Model Name:** Breathing Trainer
- **Product Dimensions:** 1"D x 1"W x 2"H
- **Resistance Mechanism:** Air
- **Special Feature:** Adjustable Resistance
- **Tension Level:** Adjustable

## Images

![Compact Breathing Exercise Device for Lungs Made in USA Respiratory Lung Exerciser Device with Adjustable Valve - Diaphragm & Core Trainer Device for Athletes o2 Portable Breathing Trainer - Image 1](https://m.media-amazon.com/images/I/61GvHis+yYL.jpg)

## Questions & Answers

**Q: Suspicious this product is american made, is "in stock", ships from philadelphia, but takes 9-15 days to deliver it 650 miles away. why so long?**
A: Hello. Because covid19 has all types of shipping delays. We ship USPS first class mail. Realistically, it should be delivered within 1-5 days. So we would rather under promise and over deliver with our estimated time frames. Our inventory should arrive at amazon soon and then you can get PRIME 2 day delivery if you dont want it shipped from our PA warehouse. 

The last thing we want to do is make our customers angry by giving an estimated delivery time and having it arrive late.

**Q: Is this a mouth breather or nose breather?**
A: Primarily mouth breathing exercise - but i can imagine uing it for nose bteathing exercises...

**Q: Can you use this while running or biking?**
A: No, Its intended to be used as its own independent workout.

**Q: What resistance should you start with?**
A: Start with it fully open and as you advance start closing it for more resistance. Ultimately you should start with what feels most comfortable.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality Item and Easy to Use
*by Y***J on July 22, 2021*

I found out about these Breathing Exercise Devices after reading an article in Martha Stewart publication. I reviewed many of the devices in a variety of price ranges and was willing to spend up to $60.00 if they really helped with stress and blood pressure. After reading reviews I settled on this product since it was going to offer the same benefits as the higher priced ones and will most likely last longer. I am not at all disappointed, it is very sturdy and comfortable to use. I looked at a YouTube demonstration before using it. It definitely changes your breathing pattern and help you to take deeper breaths. I will purchase this device three times over if need be but this will last for some time. You feel a sense of relaxation after using this device and puts you in a meditative mood.

### ⭐⭐⭐⭐ Mostly works well--could use more adjustment granularity
*by L***B on May 18, 2025*

This is not a complicated device and could be built by someone with access to and knowledge of OTC plumbing parts. But the convenience of the pre-assembled device for the price is what sold me. I have used it many times and I do feel that I am improving my breathing capacity. (For disclosure: I do not have any diagnosed breathing problems and am using this strictly on a program of self-improvement. You should consult your own professional medical personnel before embarking on anything like an exercise program.) This is a very compact device and is easy to use. My only minor complaint is that it would be nice if the valve had a wider range of efficacy--there is only a very small range where you go from totally shut off to wide open yet there is a range where the valve is either completely open or closed where turning it does not affect the flow rate. This is easy enough to work around but could be considered for a design improvement. Also, there could be included a scale so that you could easily repeat a setting and/or track progress as the resistance is slowly increased over time.

### ⭐⭐⭐⭐⭐ Very good intro breather for the price
*by M***R on July 8, 2023*

I got this to do Bas Rutten breathing exercises. Been using it everyday for 2 months and it works great. Only difference between this and the Bas O2 trainer is that this one is harder to exhale the full breath, Bas designed his to open wider on exhale for this very reason. But its still a great cheaper alternative. I saw a few people say there's no resistance. They are ABSOLUTELY WRONG. You can literally tighten this thing down so NO air can pass through. All I can think is they were cheating through their nose or can't breathe right in the first place. One piece of advice: when you take it apart to wash it make sure you tighten it down all the way, if you leave it half way you might bend the screw as you work it back and forth to remove the rubber part.

## Frequently Bought Together

- Nemstar Breathing Trainer Exercise Device - Respiratory Exerciser Device with Adjustable Valve - Exercise Diaphragm and Core Trainer Device o2 Trainer
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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-22*