This Hot Water Bottle is suitable to be used for people suffering from severe health problems like COPD, asthma, congestive heart failure (CHF) etc. You can conveniently use this device by clipping it on the fingertip for getting blood oxygen readings. Each device is based on advanced technology for detecting changes in blood oxygen level rapidly. This device is a lightweight and portable device is capable of monitoring oxygen amount carried in the body. It is manufactured with the use of quality assured components by our prowess professionals as per industry norms. The provided Hot Water Bottle is having an ability to monitor oxygen saturation during sports activities and to manage supplemental oxygen use.