A310L Led Pulse Oximeter,Website:http://www.aeonmmed.com, based on all digital technology, is intended for noninvasive spot-check measurement of SpO2 and pulse rate. The product is suitable for use in family, hospital (including clinical use in internist/surgery, anesthesia, pediatrics, intensive care and etc.), oxygen bar, social medical organizations and physical care in sports.Features1. Lightweight and Easy-To-Use. 2. Low battery voltage indicator. 3. Visual alarm function. 4. Automatically switch off while no signal. 5. Standard two AAA 1.5V alkaline batteries support more than 30 hours continuous work. SpecificationHemoglobin Saturation Display: 35-100%Pulse Rate Display: 30-250 bpmPower Consumption: < 30 mA (normal)Resolution: Hemoglobin Saturation (SpO2 ): 1 %;   Pulse Rate: 1 bpmMeasurement Accuracy:Hemoglobin Saturation (SpO2 ): 70 % - 90 %;   2 % unspecified (≤70 %)Pulse Rate: 2 bpmMeasurement Performance in Low Perfusion Condition: ≤0.2 %Demension(LxWxH): 60mm x 36mm x28mmNet Weight: 50gAccessory  1. Standard Accessory:AAA 1.5V alkaline battery:  2 pcsOperation Manual:           1 pcsHanging String:             1 pcs2. Optional Accessory:Carry bagSilicone coverDeliveryOuter box:Dimensions-80mm (L) x 60mm (W) x 55mm (H)Gross Weight-70gOuter carton:Dimensions (100pcs)-440mm (L) X340mm (W) X290mm (H)Gross Weight-8.7 kgWarranty1 year