Advanced Health Monitoring Smartwatch Solutions from China
Geyan Technology builds
custom health monitoring smartwatches in Shenzhen, China. We have been at it since 2012, and our focus is narrower than most smartwatch factories: ECG, SpO₂, and continuous health tracking, made to order for brands that want a product they can own rather than resell.
That work runs across OEM, ODM, and private label programs. Remote patient monitoring providers, senior care companies, fitness and wellness brands, and other wearable businesses come to us when they need more than a generic watch with a logo stamped on it. We design the sensor stack, write the firmware, build the companion app, and run production under one roof.
This page covers what we can make, how a custom health smartwatch project moves from a spec sheet to shipping cartons, and what separates a manufacturer you can build a product line on from one you will be troubleshooting with later.
About Geyan – Professional Health Wearable Manufacturer in China
Geyan Technology was founded in 2012 and is recognized as a national high-tech enterprise. With close to fifteen years in the intelligent electronics industry, the company combines independent R&D, precision manufacturing, and in-house quality control with after-sales service that follows the product past the dock.
We are one of the earlier names in China's smartwatch industry. Geyan helped establish both the Smart Wearable Industry Association and the Chip Industry Promotion Association, and serves as a standing committee member of each. We also design and sell our own consumer brands, Jieshilang, Jersa and xinan, which keeps the manufacturing floor honest. Before we build for you, we have been through the same failures, rework and returns that come with shipping our own products.
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Item
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Geyan Technology
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Company
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Geyan Technology
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Location
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Shenzhen, China
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Industry
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Smart wearables
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Products
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Smartwatch, smart band, smart ring
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Services
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OEM, ODM, private label
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Expertise
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Health monitoring wearables
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Why Choose Geyan as Your ECG Smartwatch Manufacturer?
Most of the OEM conversations we take on start the same way. A brand has done the market research, knows which health features their customers will pay for, and does not want to compromise on the hardware underneath. That is the gap we work in. Here is what a Geyan-built health watch actually brings.
Advanced Health Monitoring Functions Integration
The core of a health smartwatch is not the case. It is the sensors and how the firmware turns their signals into data someone can use. On our flagship models, that starts with a dedicated ECG subsystem.
ECG monitoring captures real-time electrocardiogram data through a high-precision ECG chip. On the TK16Pro, for example, that is a 512Hz ECG sensor paired with the Jieli AC7013A7 main chip, feeding APP-based analysis and HRV readings. The point is to track heart health continuously and flag changes early enough that a user notices them, not just to record a number.
SpO₂ monitoring measures blood oxygen saturation on demand or continuously, so the watch can show how oxygen levels trend through the day, at night, and during activity. For senior users and people managing chronic conditions, that is the difference between guessing and having a record.
Around those two, the watch stacks the rest of the health toolkit: heart rate tracking, HRV analysis, sleep monitoring, stress monitoring, and activity tracking. On higher-end models it goes further with one-click health checks, non-invasive blood pressure, body temperature, and estimates for blood glucose, blood lipid, uric acid and body fat. Some models also carry female health tracking and high heart rate or temperature reminders.
Custom Health Smartwatch Development from Hardware to Software
A lot of custom smartwatch suppliers are really box-and-sticker operations. They buy a reference design, print your logo, and hand you a shipping manifest. That is fine if all you need is a commodity watch. It is not enough if you are building a health product where the sensor behavior, the app, and the firmware all have to work together.
Geyan's difference is that we control the full stack. Our PCB and firmware deep-customization capability is documented in a public white paper, and it covers everything from the board layout to the software that runs on it.
Hardware Customization
Hardware work starts at the board level. We can customize the PCB and PCBA, choose and integrate sensors, select the display, and tune the battery for your target endurance. Case and strap design are part of it too, covering materials, colors, finishes, and fit.
That matters more than it sounds. A 530mAh battery behaves differently than a 160mAh one. A metal-alloy case with medical-grade conductive glass conducts ECG differently and feels different on the wrist than a plastic shell. These are not cosmetic decisions; they change how the product performs.
Firmware and Software Customization
The hardware is only half of it. We can modify the firmware, customize the watch UI, develop a dedicated companion app, and connect it all to your cloud platform through SDK and API integration.
That is the part most brands find they cannot get from a typical factory. Your watch might need to feed data into a remote monitoring dashboard, a clinical platform, or an existing fitness app. We build the integration layer so the data lands where your team can use it, not just in a generic app you do not control.
In short, Geyan provides full-stack health smartwatch customization, from the silicon to the software and the cloud behind it.
Health Monitoring Smartwatch Solutions for Different Industries
Health wearables are not a single product category. The right configuration for a remote patient monitoring program looks different from one built for a gym chain. Here is how we adapt.
Healthcare and Remote Patient Monitoring
For healthcare providers, the watch becomes a data collection device in the field. Remote health monitoring, elderly care, chronic disease management, and hospital wellness programs all rely on continuous data flowing back to a care team.
That is where 4G and eSIM versions come in. Without a phone nearby, the watch still sends emergency alerts and SOS calls, and the care team still sees the data. For an elderly patient living alone, that connection is the whole point of the product.
Fitness and Wellness Brands
Fitness brands usually want the watch to be honest about effort and recovery. Sports tracking, heart rate analysis, recovery monitoring, and personal health management are the features that keep users wearing the device after the novelty fades. Multi-sport modes, GPS, and waterproofing all feed into that.
Senior Care Companies
Senior care is where safety features earn their keep. Fall detection, a physical emergency button, location tracking, and health alerts turn a smartwatch into a safety device. Add a large readable display and a battery that lasts, and you have a product a family can trust for an aging parent.
Customizable Health Monitoring Features
Not every feature belongs in every product. Here is what we can turn on, tune, or leave out depending on the target market.
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Health Feature
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Customization
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ECG Monitoring
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Available
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SpO₂ Monitoring
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Available
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Heart Rate Tracking
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Available
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HRV Analysis
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Available
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Sleep Monitoring
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Available
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Blood Pressure Estimation
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Available
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Body Temperature
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Optional
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GPS Tracking
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Optional
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4G / eSIM Communication
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Optional
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SOS Emergency Function
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Optional
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ECG Smartwatch OEM Manufacturing Process
A custom health smartwatch is not something you buy off a shelf. It is a project, and it moves through four stages.
Step 1: Product Requirement Analysis. We start with your target market, the medical or wellness positioning, and the health functions the product has to deliver. This is where the scope gets locked before any money goes into tooling.
Step 2: Prototype Development. Industrial design, hardware testing, and sensor calibration. We build and test a working unit so the ECG readings, SpO₂ accuracy, and battery life actually match the spec before we commit to production.
Step 3: Software Integration. The companion app, firmware, and cloud platform get connected. SDK and API documentation is prepared so your team can integrate without fighting us for access.
Step 4: Mass Production & Quality Control. Production testing, reliability testing, packaging, and delivery. We run every unit through checks before it ships, and we support both small-batch customization and large-scale OEM orders.
ECG Smartwatch vs Traditional Smartwatch: What Is the Difference?
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Traditional Smartwatch
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Health Monitoring Smartwatch
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Heart Rate
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Basic
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Advanced
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ECG
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No
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Yes
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SpO₂
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Limited
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Yes
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Health Data
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Simple
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Continuous Analysis
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Application
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Lifestyle
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Healthcare + Wellness
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The short version: a traditional smartwatch tells you you are alive. A health monitoring smartwatch tells you how your body is doing, and it is built to support medical and wellness decisions rather than just notifications.
How to Choose a Reliable Health Monitoring Smartwatch Manufacturer?
Picking a manufacturer is a sourcing decision with a long tail. If the sensors are wrong, the firmware is locked, or the factory cannot hold quality, you find out months later when the returns start. Here is the list we would check, and it is the same list we hold ourselves to.
1. Sensor Technology Capability. Does the factory actually know how to integrate ECG, SpO₂ and HRV sensors, or are they buying a board they do not understand? Ask for the specific sensor models and main chips.
2. Software Development Ability. Can they build the app, the SDK and the API integration, or are you expected to handle all software yourself? If the firmware is not open to modification, your customization ends at the logo.
3. Manufacturing Experience. Quality control, production capacity, and certification support. A factory that only assembles is a different risk profile from one that designs, tests and certifies.
4. Customization Capability. Hardware, firmware, packaging and branding. Make sure the level of customization you need is actually on offer before you negotiate price.
Frequently Asked Questions About Custom ECG Smartwatch Manufacturing
Q1: Can you customize an ECG smartwatch for my brand? Yes. Geyan provides OEM and private label ECG smartwatch solutions covering hardware, firmware, logo, packaging and software customization.
Q2: What health functions can be added to a custom smartwatch? Common functions include ECG, SpO₂, heart rate, HRV, sleep monitoring, and emergency features. Optional modules include GPS, 4G/eSIM communication, and SOS.
Q3: Do you support APP and SDK/API customization? Yes. Geyan supports smartwatch APP integration, SDK/API documentation, and cloud connection.
Q4: What industries use health monitoring smartwatches? Healthcare, senior care, fitness, wellness and IoT companies commonly use customized health wearables.
Q5: What is the MOQ for custom health smartwatches? MOQ depends on the product model, the customization requirements, and the production plan. Tell us what you need and we will quote accordingly.
Partner with Geyan for Custom Health Wearable Solutions
Geyan helps global brands develop customized health monitoring smartwatches with ECG, SpO₂ and advanced wearable technologies. From prototype design to mass production, we provide complete OEM and private label solutions, backed by nearly fifteen years of manufacturing that our own brands depend on.
If you are sourcing a health wearable, start with the spec sheet. Tell us the market, the health features, and the volumes, and we will show you what is possible before you commit.
