Wear the FL330 on your wrist for recording blood oxygen level, heart rate, and motion.The soft patented silicone ring sensor doesn't make your finger numb, never slips from your finger, and releases your finger for a full range of motion!With our free PC software, you can export your records, save them in PDF or CSV format, and share unlimited data reports with others, compatible with both Windows system & Mac!The Free iOS & Android app lets you easily share blood oxygen trends and records. Also, watch your updated O2 & heart rate on your phone or tablet!Built-in Memory: works stand-alone, even without a smartphone, with up to 16hrs battery life with one full charge.