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Unboxing & Review


PACER | World's Smartest Wearable Breath Analyzer

Maximizing runners' performance with deep-learning AI analysis of 20+ biometrics, for novices & experts!
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However, achieving the ‘gold standard’ with CPET (Cardiopulmonary Exercise Test) comes with its challenges.

Taking a CPET (Cardiopulmonary Exercise Test) involves booking appointments at hospitals or research facilities, enduring expensive tests, and dealing with bulky equipment. Plus, improving your running mechanics often requires costly personal trainers.


Traditional CPET (Cardiopulmonary Exercise Testing) centers offer precise diagnostics for exercise abilities. However, a single test can cost up to $230 and require appointment scheduling. Limited availability may necessitate taking time off work, with added commuting burdens and discomfort from bulky equipment.

In contrast, investing in PACER offers unlimited CPET tests at a comparable cost, revolutionizing your training and testing paradigm to enhance your fitness expertise.

The PACER revolutionizes CPET (Cardiopulmonary Exercise Testing), allowing you the freedom to conduct tests wherever you are. This advanced device analyzes over 20 types of biometric data to determine your Running Economy, VO₂ Max, and Lactate Threshold—metrics previously inaccessible with conventional wearables, such as watches, bracelets, and rings.

Get professional-level testing with the PACER mask just once a month, and receive real-time insights about your running through AI-guidance via earphones during regular runs.

The PACER sets the standard for precision with its professional-grade accuracy, surpassing conventional analysis wearables.

With PACER, the analysis extends beyond traditional metrics to determine your optimal training speed, minimizing the risk of injuries. It evaluates 6 key postures: Cadence, Vertical Oscillation, Stiffness, Balance, Ground Contact Time, and Flight Time. This comprehensive analysis empowers you to train smarter and safer, ensuring long-term progress and well-being.

PACER analyzes the user’s key physiological data in real-time through built-in sensors such as flow sensors, photoplethysmography (PPG) sensors, and Inertial Measurement Unit (IMU) sensors.

  • The flow sensor examines parameters like breathing volume, rhythm, and pattern.
  • The PPG sensor detects the user’s heart rate from blood vessels on the facial skin.
  • The IMU sensor acquires acceleration and direction data to estimate six core running posture metrics, including cadence and vertical oscillation, ensuring a comprehensive evaluation of running safety.

The PACER syncs with the smartphone app to acquire GPS data and user information. The GPS data aids in real-time analysis of speed, distance, and route, while user information such as height, weight, age, and gender serves as reference data for precise analysis.

Leveraging over 20 types of data, PACER’s algorithm deeply analyzes aerobic capacity:

  • It quantifies the maximum exercise capacity a user can achieve, known as Maximum Oxygen Consumption (VO₂max).
  • It calculates the Lactate Threshold based on patterns of oxygen intake and carbon dioxide production and minute ventilation, indicating the user’s fatigue resistance.
  • It assesses Running Economy by tracking changes in energy consumption during exercise, revealing how efficiently the user runs.
  • Finally, it computes the user’s maximum speed based on stability levels and injury prevention through analysis of six running Posture Stability metrics.

Professional athletes meticulously evaluate their performance and physical condition using these 4 key criteria, allowing them to strategize and set specific plans for growth. 

Now, it’s your opportunity! Remember, you can’t improve what you don’t measure.

Ever wondered how professional athletes optimize their training routines? Just as they do, PACER recommends the most effective training solutions tailored specifically to you, drawing from comprehensive analysis.

PACER integrates deep learning AI and advanced sensors to monitor, analyze, and guide your movements in real-time. By providing voice instructions as you run, it enhances your performance while minimizing the risk of injury. With its proactive analysis and personalized feedback, PACER empowers you to maximize your potential and achieve continuous improvement in your running journey.

Upon receiving a pro-level analysis with the PACER Mask, your results are automatically stored in the PACER App, which promptly generates an AI-driven personalized training plan tailored to your needs. Furthermore, the app provides real-time voice coaching, guiding you through workouts and ensuring optimal alignment with your training strategies.

Seamlessly integrate with the PACER app for ongoing support and guidance and by combining the insights from the key metrics and posture stability thresholds, the PACER app enables you to unlock the best training approach tailored to your unique needs.

For marathon runners, the app’s marathon time prediction feature helps you track your progress and see how close you are to achieving your goals.

The PACER app provides customized training program with various options like Interval Run, LSD Run, Build-up Run, Daily Run, Tempo Run and Steady Run. Each program is designed to enhance your performance and suit different running styles, helping you achieve your running goals efficiently and effectively.

What’s more, the PACER boasts universal wearability, ensuring comfort for users of all genders and races. Its ergonomic design guarantees a natural and comfortable fit, allowing you to focus solely on improving your running abilities.

Additionally, the lightweight material makes it more comfortable to wear for extended periods, ensuring that you can train longer without any discomfort.

PACER mask is meticulously engineered for optimal performance and comfort, featuring a soft silicone structure that conforms to your face for a secure and comfortable fit. Made from hypoallergenic materials, it is gentle on even the most sensitive skin, prioritizing your comfort and ensuring minimal discomfort during use, allowing you to focus entirely on your training. 

Equipped with advanced electronics, the mask includes a PPG sensor, flow sensor, accelerometer, gyroscope, temperature sensor, humidity sensor, barometer, and more to provide comprehensive and precise biometric data. Its patented structure is meticulously engineered to accommodate a wide variety of sensors, ensuring accurate and reliable results.


Additionally, the adjustable strap provides users with the flexibility to achieve a secure and personalized fit, enhancing stability and comfort throughout their workouts, regardless of intensity or duration.

PACER is crafted from premium PP plastic and silicone, ensuring both durability and easy maintenance. Its waterproof and sweat-resistant materials make it highly resilient to intense workout conditions. Even when stained, it can be gently wiped with a damp cloth, ensuring it remains hygienic and ready to use for your next training session.

Designed with user convenience in mind, the PACER features easily detachable components. This allows for easy installation and removal, making cleaning a breeze. Simply detach the parts, wash them with water, and reassemble the device. This maintenance process ensures that your PACER stays in top condition, providing reliable performance and comfort during every workout.

With its fast-charging enabled USB-C port, PACER ensures you’re ready to go in under 60 minutes. Powered by a safe lithium-ion battery, it fully charges in just an hour for up to 6 hours of continuous use.

Given that each high-precision test lasts approximately 30 minutes, you can conduct up to 12 tests before needing to recharge, ensuring uninterrupted performance tracking. When it’s time to charge, simply detach the front part, plug in the included USB-C cable.

Additionally, you can effortlessly monitor the PACER’s status with its LED indicators. A steady white light signifies usage, while a blinking light indicates mobile device pairing and a red glow indicating charging status. These intuitive visual cues keep you informed for a seamless experience every time.

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