Product The Diabetic Watch Blood Glucose Monitor features an optical heart rate sensor for 24-hour high-precision heart rate monitoring. Equipped with a built-in blood glucose detection chip, it allows users to monitor their blood glucose levels directly from their wrist. Advanced PPG bio-tracking optical sensors enable additional functions such as blood oxygen, blood pressure, temperature testing, step counting, distance, calories, sleep monitoring, and more. All-day monitoring ensures users can keep track of their body indicators conveniently. The watch has a long battery life thanks to its low-power chip and intelligent power-saving algorithms, providing up to 15 days of standby time with light use and 10 days with heavy use. Compatible with Android 4.4 & IOS 8.0 and above smartphones. Color: Black Material: Metal Package Contents: 1 x Watch Note: Only the items listed in the package contents are included; other products are not included. Please note that light reflections and differences in monitor settings may cause slight variations in the color of the actual item. Measurement tolerance is approximately +/- 1-3cm.