yuwell Pulse Oximeter, Blood Oxygen Saturation Monitor Fingertip with Rate Display, Batteries Included (YX105)

【CLINICAL ACCURACY】: One of the few pulse oximeters with CE certificate, supported by clinical studies and yuwell's 26 years of medical device expertise 【ADVANCED TECH】: This finger oxygen monitor fits various skin colors and sizes, powered with high-performance SOC chip and advanced algorithm 【LIGHT BLOCKING】: Silicon chamber design largely blocks ambient light and thus improves measurement accuracy, and also offers comfortable finger touch 【POWER SAVING】: The finger pulse oximeter automatically powers off in 8 seconds with no activity 【WHAT'S IN THE BOX】: pulse oximeter, lanyard, AAA batteries x 2, user manual.