We are offering finger tip pulse oximeter. finger pulse oximeter integrated with spo2 probe and processing display module, displays : spo2 value , pulse rate, bar graph , pulse waveform, with spo2 value and pulse rate value of storage, the storage data can be uploaded to computers, display mode : 1.3" 65k color oled display, power supply: voltage 3.7 rechargeable lithium battery × , weight: about 50g (with the lithium battery*1).