Smart Ring No Subscription, Health Tracker Ring for Women (Black, 7#)
US$89.96
Arrives as soon as ✓ Free shipping — over $200Description
Product Details Color:Black Item Weight:2.47 g Compatible Devices:Smartphone Unit Count:1 Count Battery Cell Type:Lithium Ion Target Audience:Men, Unisex Adults, Women Shape:Round Warranty...
Delivery & Returns
Free shipping over $200
Orders of $200 or more ship free. No code needed.
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Product Details
- Color:Black
- Item Weight:2.47 g
- Compatible Devices:Smartphone
- Unit Count:1 Count
- Battery Cell Type:Lithium Ion
- Target Audience:Men, Unisex Adults, Women
- Shape:Round
- Warranty Description:2 Years
- Operating System:watchOS 1
- Additional Features:Activity Tracker, Gesture Control, Lightweight, Multisport Tracker
- GPS Geotagging Functionality:GPS Via Smartphone
- Case Material Type:Stainless Steel
- Water Resistance Level:Waterproof
- Sport Type:Cycling, Fitness, Hiking, Swimming, Yoga
- Human Interface Input:Gesture
- Supported Application:Fitness Tracker
- Water Resistance Depth:80 angstrom
- Metrics Measured:Heart Rate Monitor
- Connectivity Technology:Bluetooth
- Wireless Compability:Bluetooth
- Communication Feature:Bluetooth, GPS Via Smartphone
- Display Type:No Display
- Warranty Type:Limited
- Waterproof Rating:IP68
- Built-In Media:Charging Cable, User Manual
- Wearable Computer Type:Smart Ring
- Battery Capacity:150 milliamp_hours
- Battery Average Life:5 days
- Battery Charge Time:1 hours
- Battery Power:0.45 watt-hours
- Compatible Phone Models:Android Devices, iOS Devices
- Memory Storage Capacity:2 MB
- RAM Memory Installed:32 KB
About this item
- Size Guide & Perfect Fit – Skip Return HasslesRefer to our official smart ring size chart and measure your finger circumference prior to placing your order. A full range of standard sizes offers a snug, irritation-free fit for all-day wear.
- 6‑in‑1 Health Tracking & Real‑time Data MonitorThis HollowTree smart health ring accurately tracks heart rate, blood oxygen, HRV, stress and steps, serving as an all-in-one heart rate, step and fitness ring tracker. It precisely calculates daily & workout calories, and all health data sync instantly to its dedicated app for full health tracking.
- Professional Sleep Tracking – Sleep Cycle AnalysisOur sleep ring auto-tracks full deep, light and awake sleep cycles. This sleep tracking ring monitors overnight blood oxygen shifts & breathing patterns to capture core sleep metrics, ideal for men and women. It logs 24/7 sleep data and creates detailed analysis reports for sleep tracker reference.
- Zero Subscription & Multi-Sport ModesNo locked-in subscriptions or hidden fees whatsoever with our no-subscription smart ring. This HollowTree smart ring supports various sport modes: walking, running, cycling, yoga, hiking and more.
- 5-Day Long Battery Life & Easy ChargingA full charge delivers 5 consecutive days of 24/7 tracking and sleep monitoring for your smart health ring. The included 400mAh charging case offers 10–15 extra recharges for portable power, ideal for travel and outdoor use with your fitness ring. Plug-and-charge design, no complex operations needed.
- 80M IP68 Waterproof Swimming SupportThis IP68 smart ring tracks complete swimming metrics, ideal for showers, handwashing and everyday sweat. Just rinse after pool/seawater use; no removal required for bathing, swimming or daily water activities. Perfect for water sports and daily wear.
- Wide Compatibility & All-Day ComfortFits all iPhones & Android smartphones with stable links and smooth data sync. Slim lightweight build brings pressure-free comfort for all-day wear, sleep & long shifts, fit for men & women fitness tracking. Gesture control enables hands-free photo capture for outdoor sports & holiday gifts.
Shipping Policy
Sparkmere ships from the United States.
Most orders leave the warehouse within 1 business day and arrive in 2–7 business days.
- Free shipping on orders of $200 or more, applied automatically
- Otherwise shipping is a flat $6.90
- Your tracking number is emailed as soon as your order ships
- We currently ship to the lower 48 United States
Return policy
30-day returns.
If it's not quite right, you can request a return within 30 days of delivery, and Sparkmere will email you return instructions. Change-of-mind returns must be unused, unassembled, and in their original packaging. There is no restocking fee. Depending on the item's packaged size and weight and how it needs to be collected, a change-of-mind return may have a return shipping or pickup cost. We only deduct the actual cost: we tell you the exact amount and get your OK before arranging a paid return, and if there is no cost, nothing is deducted. Returns for damaged, defective, or incorrect items are free.
How it works
- Email us at support@sparkmere.com with your order number.
- We send your return instructions within 1 business day, along with any return shipping cost so you can decide.
- Your refund goes back to your original payment method within 10 business days of the carrier scan.
Damaged or defective on arrival? Send a photo and Sparkmere replaces or refunds immediately, return shipping on us, and in most cases you won't need to send anything back.