Description: Color:black,white Net Contents:30g Features: 1. High-precision blood oxygen detection, fast response, suitable for home and medical institutions. 2. Adopt advanced photoelectric sensing technology to ensure stable and reliable measurement results. 3. Large screen OLED display, clear interface, simple and intuitive operation. 4. Low power consumption design, support USB charging, easy to carry and long-term use. 5. Comply with international medical equipment standards. Comments: 1. The manual measurement tolerance is 2-5g. Please don't mind your substitution. 2. Due to differences between different monitors, the image may not reflect the actual color of the item. Thank you very much! 3. SKU color is the color of the product packaging. Package includes:1* Medical oximeter