Item Type: Oximeter<br />Features<br />- Reliable accuracy and durability<br />- Two Color OLED Display， four display modes.<br />- 2-Direction Display adjustable.<br />- Low voltage indicator， Real-time spot-checks.<br />- Low power consumption，50 hours continuous to work.<br />- Automatic power off when no signal<br />Application:Finger<br />Size:Finger type， small one<br />Display type::<br />Duel color OLED<br />2 x AAA 1.5V alkaline battery<br />Batteries::Not included