Especially since the press releases mentions "measurement". Physics and measurements are strictly defined and a 5Hz can only allow you to measure 2.5Hz (Shannon Nyquist). And that would be the measure for 0.4 seconds not 0.1 or 2/5th of a second. That's pretty far from 1/10th. BIPM (Bureau International des Poids et Mesures) is defining the term measurement for several physical quantities and measurement. Of course, it is not the first brand making this error. Zénith, Tag, Journe... Tag had once corrected one press release.