Generise Oximeter Finger Tip Pulse - Blue & White with Red Display Used Widely at Home, Medical Establishments and Community Centres for Added Peace of Mind. Measures SpO2 (Peripheral Capillary Oxygen Saturation) And PR (Pulse Rate) Battery Indicator Pulse Sound Function Alarm Function Compact and Lightweight Note: Batteries Not Included (X2 AAA Needed) There Is A Protective Film Over the Screen – Feel Free to Remove This If You Wish. Shipping Size UK: Over 2.5cm - Parcel Outside UK/ ROW: Over 2.0cm - Parcel