ZBNMY Smart Ring Fitness Tracker (Black, Size 10) — 7-Day Battery, Sleep & Heart Rate Monitoring

The ZBNMY Smart Ring is a compact, subscription-free wearable that tracks heart rate, blood oxygen, steps and sleep, with up to seven days of battery life and IP68 water resistance.

Designed for people who want continuous health and activity insight without bulky wristwear or recurring fees, the ZBNMY ring pairs with a free app on Android and iOS to display your metrics. It combines basic fitness tracking, round-the-clock heart rate and blood oxygen estimates, multiple sport modes, and automatic sleep staging in a slim, durable metal shell. The ring ships with a portable charging case and is sized to fit precisely using the string-measure method provided in product images.

How does the ZBNMY ring monitor my health throughout the day?

The ring uses on-board sensors to record heart rate and blood oxygen continuously or at set intervals, logging data to the companion app so you can review trends. It captures activity metrics like steps, distance and calories and aggregates them with sleep data for a fuller view of daily wellness.

• 24-hour heart rate tracking with historical graphs in the app
• Blood oxygen monitoring to observe relative changes over time
• Step counting, distance and calorie estimates for daily activity
• Automatic sync to the free app—no subscription required

What sleep details will the ring provide and how accurate is it?

The ZBNMY ring automatically detects sleep and divides it into light sleep, deep sleep, REM-like eye movement and awake periods. The app presents durations and simple scoring so you can spot patterns, but it is intended for lifestyle tracking rather than clinical diagnosis.

• Automatic sleep detection and stage breakdowns
• Night-by-night reports and weekly summaries in the app
• Actionable snapshots to help you adjust bedtime habits
• Non-medical insights useful for personal sleep improvement

How long does the battery last and what charging options are included?

A single charge takes about 1–2 hours and the ring runs roughly 5–7 days depending on usage and sensor settings. The package includes a compact 500 mAh portable charging case that extends away-from-desk uptime—handy for travel and on-the-go charging.

• 1–2 hour full-charge time for the ring
• 5–7 days typical battery life with standard tracking enabled
• Portable charging case with 500 mAh capacity included
• Easy dock-and-charge design for travel convenience

Is the ring durable and how should I choose the right size?

The ZBNMY ring has an IP68 rating for water and dust resistance so you can wear it during handwashing, showers and shallow swimming. To ensure a secure fit, measure your finger’s outer circumference using the string method shown in the product images and consult the included size chart—pull the string a bit tighter or choose one size smaller for a snug fit.

• IP68 waterproof rating for everyday water exposure
• Metal construction designed for daily wear and activity
• String measurement method with size chart for an accurate fit
• Choose one size smaller for a firmer, slip-resistant fit

Who is this for: The ZBNMY Smart Ring is aimed at people who want discreet, continuous tracking without subscription costs—commuters, frequent travelers, minimalists who dislike wrist devices, and anyone seeking daily activity and sleep trends. It’s ideal for users who want a compact tracker that syncs to a free app, offers multi-day battery life and holds up to routine water exposure, while providing easy sharing and remote camera control features suitable for couples, friends and family.