HOLFENRY Wrist Pulse Oximeter with Overnight Recording

About this product

• Continuous Overnight Tracking for Better Sleep Insights — HOLFENRY wrist continuous pulse oximeter tracks your SpO2 and heart rate while you sleep, helping you understand your nightly wellness trends. Up to 15 hours of continuous recording on a single charge.
• Customizable Audio Reminders — Set your preferred SpO2 and heart rate ranges in the app, or use the default settings. The wrist oxygen saturation monitor fingertip alerts you with a gentle beep when readings fall outside the range.
• Comfortable for Either Wrist — The soft silicone probe is designed for overnight wear, and the 1.83" display rotates 180° for easy viewing on your left or right wrist.
• Bundled App & Unlimited Reports — rechargeable pulse oximeter wrist sync with the app “HealthTree - health assistant” to review data recorded every 4 seconds, view trend charts, and download/share unlimited reports. No subscription required.
• What You Get & Important Note — 1× HOLFENRY wrist pulse oximeter fingertip, 1× soft silicone sensor, 1× charging cable, and customer support. This device is intended for sports and aviation use only; it is not intended for medical purposes.

From the Amazon listing, fetched 21 September 2026. Amazon’s words, not ours.