Features: 1. Accurate, reliable and fast readings: consistent results that have been tested and proven. The large digital OLED display can quickly receive blood SpO2, pulse rate and pulse intensity results. 2. SpO2, pulse rate and pulse bar graph reading: simple bar graph that shows your SpO2, pulse rate and pulse intensity results. 3. Suitable for all ages: sophisticated design allows various finger sizes to fit the finger cavity. 4. Portable and easy to use: light weight, compact structure, easy to carry and carry, can be used at home or outdoors. 5. Health care: This oximeter can check the health of you and your family at all times, which is convenient and easy to use. Description: 1. This device is very suitable for testing SpO2 and pulse rate in sports activities, such as climbing, running, cycling, etc. 2. This product is light in weight, compact in structure, easy to carry, suitable for protecting the health of you and your family. Specifications: Display: LCD display Blood oxygen measurement range: 70%-99% Accuracy: +/-1% Pulse rate measurement range:30BPM-240BPM Battery: 2*AAA 1.5 V lithium battery Power consumption:less than 30ma Operating temperature: 5-40℃ Storage temperature: -10-40℃ Shell material: plastic Size: 5.5*3*3cm Package Included: 1 * lanyard 1 * Oximeter 1 * Instruction Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.