Bistos 4.3″ Color Touch Screen Handheld Pulse Oximeter, BT-710. The Bistos BT-710 is a handheld pulse oximeter with a 4.3″ color LCD touch screen. It provides an accurate SpO2 reading during motion and low perfusion. It comes with PC software for data analysis. The rechargeable built-in li-ion battery provides 8 hours of continuous operation and easy charging with the pulse oximeter’s mini USB port. It is suitable for adult, pediatric and neonatal patients.