I’ve tested, reviewed, and researched dozens of smartwatch manufacturers and wearable brands, especially those focused on health tracking. Among all the health metrics, HRV (Heart Rate Variability) is one of the most advanced yet least understood. In this list, I’ve selected 10 companies that offer the most reliable and customizable HRV smartwatches today.
To help you make an informed decision, let’s explore the best manufacturers.
IWO Smartwatch
Location: Shenzhen, China
Company type: Manufacturing, OEM & ODM customization
Year founded: 2016
Number of employees: 500
Main product: Smartwatch
Other products: Smart ring, smart band
Why IWOSmartwatch Is on This List:
You didn’t read it wrong, Shenzhen is not in the US or Europe, but there’s a reason why I placed IWOSmartwatch on this list. With a strong presence in multiple global markets and millions in sales, I had to include our brand as a leading HRV smartwatch manufacturer. IWOSmartwatch exports to many countries, including Switzerland, Germany, France, and the US, and has built a reputation for quality and customization.
HRV Capabilities:
IWOSmartwatch specializes in customizable HRV monitoring wearables for global B2B clients. Leveraging PPG + ECG dual-sensor technology and proprietary algorithms such as the Lorenz heart health analysis, IWO delivers HRV accuracy down to 1 ms (1000 Hz) — comparable to clinical research standards.
Sensor Platforms:
- Goodix GH3018: High-end solution for advanced health tracking and professional-grade applications.
- AB5362: Cost-effective platform offering reliable HRV features at entry-level pricing.
Customization Options:
We support full OEM & ODM customization:
- Brand logo, strap materials, UI design
- Packaging and companion app integration
- Firmware and algorithm tuning for HRV, SpO₂, stress, and more
Pricing & Capacity:
- Entry-level: $15–29/unit, MOQ: 3000 pcs
- High-end: $35–69/unit, MOQ: 3000 pcs
With ISO-certified manufacturing, CE/FCC/Bluetooth compliance, and a monthly capacity of over 200,000 units, we ensure both scalability and reliability.
Proven Success:
Our HRV solutions have powered:
- GPS-enabled sports watches for Swiss outdoor brands
- Elderly care wearables with HRV + GPS for European healthcare
- Creative ODM projects like custom smartwatch gift sets for tourism brands
If you’re looking to launch a unique, research-grade HRV wearable, we’re ready to build it with you.
Apple
Location: United States
Company type: Consumer electronics
Year founded: 1976
Number of employees: 160,000+
Main product: iPhone
Other products: Smartwatch, tablet, laptop
Why It’s on This List:
Apple’s smartwatches are the gold standard in wearable health tracking. Their HRV tracking is reliable, based on optical sensors, and integrated into the Apple Health ecosystem. Studies show Apple Watch HRV readings are closely aligned with clinical devices like the Polar H10.
Garmin
Location: United States
Company type: Wearable technology, fitness electronics
Year founded: 1989
Number of employees: 19,000+
Main product: Smartwatch
Other products: GPS devices, bike computers, aviation systems
Why It’s on This List:
Garmin’s watches offer deep HRV insights, especially for athletes. The "HRV Status" feature provides recovery insights and stress levels. Studies confirm excellent agreement with ECG benchmarks, making Garmin a top choice for serious users.
WHOOP
Location: United States
Company type: Wearables, subscription service
Year founded: 2012
Number of employees: 500+
Main product: WHOOP Strap
Other products: None
Why It’s on This List:
WHOOP is designed for elite athletes and research. It measures HRV (RMSSD) during sleep, with near-clinical accuracy. WHOOP 4.0 has a proven ICC of ≈0.99 against ECG. Though it’s not for active HRV monitoring during workouts, it’s unmatched for recovery data.
Samsung
Location: South Korea
Company type: Electronics conglomerate
Year founded: 1938
Number of employees: 270,000+
Main product: Smartphones
Other products: Smartwatches, TVs, appliances
Why It’s on This List:
Samsung’s Galaxy Watch integrates HRV as part of its stress tracking features. The readings are visualized in Samsung Health and offer insights into daily energy levels and emotional stress.
Polar
Location: Finland
Company type: Fitness technology
Year founded: 1977
Number of employees: 1,200+
Main product: Heart rate monitors
Other products: Smartwatches, bike computers
Why It’s on This List:
Polar pioneered heart rate tracking and remains one of the most respected names in HRV monitoring. Their Nightly Recharge feature gives daily insights into recovery, making it a favorite among endurance athletes.
Suunto
Location: Finland
Company type: Sports and adventure tech
Year founded: 1936
Number of employees: 400+
Main product: Smartwatches
Other products: Dive computers, compasses
Why It’s on This List:
Suunto watches focus on recovery using HRV. They calculate RMSSD at night and provide 7-day and 60-day trends. It’s a great tool for managing training load and recovery timing.
Huawei
Location: China
Company type: Telecommunications & electronics
Year founded: 1987
Number of employees: 190,000+
Main product: Smartphones
Other products: Smartwatches, tablets, network equipment
Why It’s on This List:
Huawei’s TruRelax™ tech uses HRV to detect stress and track relaxation throughout the day. It combines this with sleep quality, SpO₂, and respiration data for a complete health view.
Amazfit (Zepp Health)
Location: China
Company type: Wearables, health tech
Year founded: 2013
Number of employees: 1,000+
Main product: Smartwatch
Other products: Smart bands, earbuds
Why It’s on This List:
Amazfit watches measure HRV during sleep and rest. Their software analyzes trends using RMSSD and provides personalized wellness feedback. They’re budget-friendly yet offer decent accuracy.
Withings
Location: France
Company type: Health monitoring tech
Year founded: 2008
Number of employees: 200+
Main product: Smartwatch
Other products: Smart scales, sleep trackers
Why It’s on This List:
Withings focuses on medical-grade accuracy. The ScanWatch 2 monitors HRV during sleep and combines it with ECG, respiration, and SpO₂ to help users track long-term heart health.
Conclusion
Finding the right HRV smartwatch manufacturer is crucial for building trust with your customers. This list gives you a solid foundation for comparing top options—whether you’re sourcing as a brand, retailer, or tech startup.
By evaluating these companies, you can confidently select a reliable supplier for your HRV-enabled wearable business.
If you’re looking for custom firmware, private label design, or full OEM/ODM solutions with advanced HRV features, reach out to us at IWOSmartwatch.
