Features: 1. 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. Portable and easy to use: light weight, compact structure, easy to carry and carry, can be used at home or outdoors. Description: The low voltage warning indicator will be displayed in the visible window when the battery voltage is too low, which may affect normal use. Specifications: Color: random Battery: 2 * AAA battery Automatic shutdown: 8s Service time: 10h Material: ABS+OLED Size: 9.3*5.7*5.2cm Blood oxygen value display range: 70 ～ 100% Pulse rate value display range: 30 ～ 240BPM Resolution: blood oxygen saturation is 1%, pulse rate is 1BPM Package Included: 1 set * Finger clip pulse oximeter 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.