[Product Information]

Wrist Fit: Fit wrist from 5.5 to 8 inch. Polymer lithium 80mAH battery; It use about 3-5 days operating time. It's IP67 waterproof fitness watch can be used when washing dishes. But do not recommend wearing it when showering and swimming.As to heart rate and blood pressue and blood oxygen being measured， you have to scroll to the item you want to measure and allow a couple of minutes for the device to compute and report the data.
Main functions: This fitness watch will track all-day activity like steps， distance， calories burned.The heart rate， blood pressure and oximeter is monitoring via light sensor reflected (Green Light). So there is a little difference according to people's skin. Please make it turn over and close to the pulse if it can't reading when monitor HR. The adopted algorithm will identify heart rate automatically.(About 5bpm deviation)
CALL and MESSAGE REMINDER: will vibrate to let you know about the incoming calls， emails， SNS messages (like twitter， facebook， Whatsapp.etc)， also there will be iconic reminders in the screen.
FEATURES: responsive 0.66inch OLED touch screen (will light up when raise your wrist)， 1.5-2h fully charged time， IP67 waterproof (rains， splashes， wash hands， bath all OK.)， High-technological Gravity sensor， Nice package with charger， Safety and soft wearing band.
NOTE: Blood pressure sensor， heart rate sensor， and device itself are all consumer electronics products and not professional medical devices， might interference by the external environment， data of heart rate， and blood pressure are for reference only.