Yongrow YK-K1 Medical Fingertip Pulse Oximeter for

🍀FEATURES 🔅Perfectly fits children's fingers 🔅Cute cartoon shapes. The cute appearance is loved by many children, and the measurement process is just like playing with a toy. 🔅Upgraded soft protection pads. Special custom soft protection pad. Soft and perfect fit for children's fingers with light grip to protect children's fingers 🔅Built-in rechargeable lithium battery, The power supply is more stable, eliminating the need to frequently replace the battery. 🔅Optical frequency conversi