Fast Delivery: -Ship out withinin 1-2 days (Exclude pre-orde); -Warehouse is based in Meycauayan City , normally it will takes 3-5 days to other place; IMPORTANT!!! Please do not directly give a bad rating once you recieved item with any problem , don't miss your after-sale right to enjoy. If you 1.Receive product with damages 2.Receive product with short quantity; 3.Receive product that doesn't work when you use it for just a few days SOLUTION: Directly contact us thru Chat, clarify your problems and provide the photo of the order/product . We will resend you a new product/missing item and we will cover the shipping fee Specification: Color:White Size:122*29*22MM Measurement range of arterial oxygen saturation: 5% - 99% SpO2 accuracy: ±1% within the range of 90% - 99%; ±2% within the range of 70% - 89%; Undefined for other ranges Alarm range of arterial oxygen saturation: Consistent with the display range, and the setting step is 1% Pulse frequency range: 30 bpm - 250 bpm Pulse rate accuracy: ±1 bpm Pulse rate alarm range: Consistent with the display range, and the setting step is 5 bpm Data update cycle: 0.25s - 2s Arterial oxygen saturation average value in public relations: 8 Pulse frequency sound: PR sound Peak wavelength range: 500nm - 100nm Maximum optical output power: 150mW Pulse rate display: Digital Features: - Rechargeable Oximeter with Respiratory Rate - NON - CONTACT Thermometer - Built - in Li - ion Battery - Battery Life: 90+ DAYS