Manufactured with same technical specifications and technology of NONIN professional oximeters, but dedicated to consumers suffering from shortness of breath, fatigue or limited activities. - highly resistant: tested to resist 25 times to fall down from 1 meter, to liquids and to continuative use - patient oriented display - finger size range from pediatrics to adult - easy to read perfusion indicator - suitable for low perfusion patient Other manuals for download: GR, PL, DK, NO, SE, FI. Back light display 2400 tests performed with one AAA battery (21 hours continued use) Lead (PB) free and latex free