HD OLED Display: Features a high-resolution screen that's adjustable for easy viewing from any angle. Accurate Readings: Designed with all-digital technology for non-invasive spot checks. Advanced DSP algorithms minimize motion artifact effects and improve measurement accuracy. Lightweight & Portable: Compact and lightweight design makes it easy to carry and use. Tips: Two standard 1.5V AAA batteries support over 20 hours of continuous operation (batteries not included). A low battery indicator will remind you when power is low. Wide Application: Suitable for families, hospitals, social organizations, sports healthcare, and more. Fast delivery. Features: 1. Material: Plastic + electronic component. 2. Color: Green. 3. Battery: 2 AAA 3V batteries (not included). 4. Pulse measurement range: 30bpm-250bpm. 5. Wave display: Column and waveform display 6. Dimensions: 37 x 35 x 60 mm. Contents: 1 x Host. 1 x User Manual.