Willnice Wristband Sleep Oxygen Monitor, Pulse Oximeter with Smart Notice Continuous Tracks Oxygen and Heart Rate for 30 Hour, Offline Storage, Sports Use Only - GY Deco

• ACCURATE AND EFFICIENT: Sleep monitor are specially designed to continuously track your oxygen levels and HR, a real-time tracking display on the screen for your check. 30 hours of continuous use on a single charge SOFT SENSOR: The equipped silicone soft finger cot, comfortable to wear, good air permeability, not easy to slip off your fingers, allowing you to sleep at ease while recording your data. SAFE DESIGN AND EASY TO USE: Use an independent base station to save data and focus on privacy. No network operation or APP connection is required, easy to use for elderly. EXCEPTION REMINDER: The volume of the reminder sound and the threshold of the reminder can be customized. When your SpO2 or HR exceeds the reminder threshold set by yourself, the tracker will make sound to notify you, so that you can use more at ease. LONG TIME USE - Designed for sports or aviation use only not for medical use, rechargeable for long time use, 30 hours of continuous use on a single charge