It allows to set the threshold and the intensity of the vibration alert on the device or Vihealth APP according to your own needs. If an irregular 02 level is detected, it will vibrate. SOFT RRING SENSOR-- Equipped with a patented ring-type blood oxygen probe, it is light and compact. It won't make your fingers bulky (compare with duckbill probes), and it's comfortable to wear all night long.
RECHARGEABLE and PORTABLE-- Super battery duration, work up to 16 hours on one charge. Suitable for home use and travel. 1X Visual Oxy oximeter;1X Micro USB cable;1X User guide. Recorded Parameters:Blood oxygen level, Pulse rate, Motion Battery:Rechargeable lithium barrery Built-in Memory:4 sections, up to 10 hours each section Wireless:Bluetooth 4.0 BLE Remind Source:Low oxygen level, High/low pulse rate Pulse Rate Accuracy:±2 bpm or ±2% Pulse Rate Range:30 to 250 bpm Blood Oxygen Accuracy:80-99%: ±2%, 70-79%: ±3% Blood Oxygen Level Range:70%-99% Dimension:17.5cm9.5cm11.5cm.This item is in the category "Health & Beauty\Health Care\Monitoring & Testing\Oximeters". The seller is "yuanzhi_mfy_04" and is located in this country: US. This item can be shipped to United States.