The second wave of coronavirus has hit India and is worse than the last one with close to 3 lakh new infections recorded on Monday. Among the most common symptoms being observed is the drop in blood oxygen levels, so it has become more important than ever to have a pulse oximeter handy. Now, there are a host of pulse oximeters available online, which help measure the oxygen saturation level or SpO2 in the body. The clip-like device can be bought for under Rs 2,000 as well from e-commerce sites like Amazon and Flipkart. For those looking to buy a pulse oximeter, we take a look at options for under Rs 2,000.