Come and see our amazing products. The fingertip pulse oximeter fits all finger sizes from kids above four years old to adults. It has many function such as blood oxygen, pulse, bar graph, pulse waveform display, and PI blood perfusion monitoring. Besides,it has sleep monitoring function, and record with waveform function It can record waveform data for up to 8 hours. When there is no signal, the product will automatically shut down after no less than 8s to save power. It is small size and light weight to be easy to carry out. Pls confirm with us about the packing info, stock color and exact production time before placing your order.