ZBNMY Smart Ring Fitness Tracker for Women & Men — Black Size 9, Sleep & Heart-Rate Monitor, 7-Day Battery

The ZBNMY Smart Ring is a compact wearable that tracks heart rate, blood oxygen, sleep stages and daily activity with a free app and up to seven days of battery life.

Small enough to wear all day, this black ZBNMY ring brings continuous health and activity monitoring to your finger without any recurring subscription. It connects to Android and iOS devices, stores detailed sleep and movement data in the companion app, and ships with a portable charging case so you can recharge on the go.

How accurate is the ZBNMY ring for daily activity and step counting?

The ring uses built-in motion sensors to monitor steps, distance and calories burned throughout the day. While it provides a reliable overview of activity patterns, wrist or ring trackers are best used for trends rather than medical-grade precision.

• Records step count, distance, and estimated calories burned.
• Multiple sport modes to log different types of exercise.
• Lightweight design to wear during everyday activities and workouts.

What sleep and overnight monitoring does it offer?

Sleep tracking runs automatically each night, distinguishing light and deep sleep, REM/eye movement phases and awake periods. Data syncs to the free ZBNMY app so you can review sleep duration and quality and spot patterns over time.

• Automatic detection of sleep stages and wake times.
• Nighttime heart-rate overview to contextualize rest quality.
• Clear sleep reports available in the companion app without subscription fees.

How long does the battery last and how do you recharge it?

A single charge takes around 1–2 hours and delivers approximately 5–7 days of use depending on features enabled. The ring comes with a 500 mAh portable charging case so you can top up power while traveling or between meetings.

• Charging case included for convenient recharges away from a wall outlet.
• Typical 5–7 day runtime with regular monitoring enabled.
• Fast recharge times—fully ready in about two hours.

Is the ZBNMY ring water-resistant and durable for daily wear?

The ZBNMY ring carries an IP68 rating, making it suitable for hand washing, showers and brief shallow swims. Its durable construction aims to withstand everyday knocks while maintaining sensor contact with skin.

• IP68 waterproof for protection against splashes and short immersion.
• Robust finish designed for daily wear and routine activities.
• Comfort-focused form factor to reduce slipping during motion.

Who is this for: The ZBNMY Smart Ring targets users who want a discreet, low-maintenance wearable that monitors activity, sleep and basic physiological data without subscription costs. It suits commuters, frequent travelers, couples sharing data, and anyone looking for a compact tracker that fits comfortably on a finger rather than a wrist.