"Sleek design, accurate tracking all day"
"Comfortable fit, battery lasts a week"
"App syncs smoothly, sleep insights helpful"
"Stylish ring, waterproof, tracks workouts accurately"
Cross-Line Smart Ring
Features:
- Comprehensive Health Tracking: Accurately monitors Heart Rate, Blood Oxygen, and Distance/Steps (Activity).
- Multiple Sport Modes: Supports tracking for walking, running, cycling, swimming, and more (records heart rate, steps, distance, calories, time).
- Ultra-Light & Comfortable: Weighs only 6.8 g (3.6g for size 8# shown), featuring a sleek, lightweight design for all-day wear.
- Superior Water Resistance: 5 ATM waterproof technology allows wearing for swimming, handwashing, and rain.
- Quick Magnetic Charging: Features magnetic fast charging for convenience and long-lasting battery performance.
- Smart App Integration: Data syncs to a mobile App (QRing App), supporting both Apple (iOS) and Android systems.
- Seamless Health Management: Uses precise biological sensors for accurate monitoring of health and sleep patterns.
- Compact and Portable: Small size, easily carried and fits into a pocket (referencing the charging case).
Specifications:
- Brand: hiamcom
- Model: R04
- Launch Time: 2025
- Battery Capacity: 20 mAh (Ring) / 200 mAh (Case, implied)
- Product Weight: 6.8 g (Ring) / 43 mm x 25 mm (Case, implied)
- Wearing Method: Finger (Wear)
- Applicable System: Apple (iOS), Android
- Compatibility Platform: Android (Supports both Apple/Android overall)
- Additional Functions: Heart Rate, Blood Oxygen, Distance/Activity
- Waterproof Level: 5 ATM
- CPU: RTL8762 (Implied from image)
- Packaging List: Ring, Manual, Packaging Box, Charging Cable
Shipping is 100% FREE with traking — no minimum purchase required
Processing time: 1–3 business days
Estimated delivery:
- USA – 5–9 business days (USPS)
- UK – 4–8 business days (Royal Mail & Hermes)
- Other – 7–14 business days
Delivery estimates may vary. All orders are dispatched within reasonable timeframes under consumer law.
Returns & Exchanges: 14-day return or exchange policy. Just contact us — it’s easy.
Choose options
SLEEP TRACKING
WATERPROOF
MULTI-SPORT MODES
LONG BATTERY
STEPS & CALORIES
Need help?
Our smart jewelry works with most modern smartphones — any Android device running version 5.1 or higher and iPhones with iOS 10.0 or later.
Just connect through the companion app via Bluetooth 5.0 or newer, and you’re ready to go.
The smart ring monitors your heart rate, blood oxygen (SpO₂), sleep quality, steps, calories, distance, and stress levels (HRV).
It also supports multiple sport and workout modes, helping you track your activity and recovery throughout the day.
(Some features may vary slightly depending on the model.)
On a full charge, the ring typically lasts 3–7 days, depending on usage.
It takes about 1 to 1.5 hours to fully recharge using the included magnetic charger.
Most of our smart rings are made with a stainless-steel shell and a hypoallergenic finish, with internal electronics fully sealed and sweatproof.
You can find detailed material information in the product description on each item’s page.
No worries — we offer a 14-day return policy. Just contact us, and we’ll make the process quick and easy.
