Aw fɔ chenj bateri na ɔksimita na XM-111 XM-111 FingerTip Pulse Oximeter by JoyTech na wan CE MDR-apruv divays, we de mek shɔ se dɛn fala di ays sef ɛn pefɔmɛns standad dɛn. We de gi wan we we nɔ gɛt wan bɔt ɛn we fayn fɔ wach di blɔd ɔksijɛn sɛtyureshɔn (SPO2) ɛn di puls ret na os, dɛn mek di XM-111 fɔ pɔtabiliti ɛn izi fɔ mek