Specifications

YCO-1093-02-02

Body Fat Levels

The ClockMINI (DF301) / ClockNAVI (DF311) uses the BIA method to calculate an estimate of

your body fat percentage through a correlation formula that has been developed on the basis of

scientiﬁ c tests conducted by Yamato.

Unfortunately, while several standards have been proposed, there is no consensus as to what

ideal body weight, BMI or body fat percentage should be. Your ClockMINI (DF301) / ClockNAVI

(DF311) groups your body fat level into one of four categories (Low, Average, High and Very High)

according to the chart below.

Level Low Average High Very High

Level

Indication

Body Fat %

Male 10.4% or less 10.6% ~ 20.8% 21.0% ~ 26.8% 27.0% or more

Female 21.8% or less 22.0% ~ 32.8% 33.0% ~ 38.8% 39.0% or more

BMI M / F 19.9 or less 20.0 ~ 24.9 25.0 ~ 29.9 30.0 or more

Body Fat Estimation

The following activities prior to using this device could result in inconsistent or inaccurate estimation

of body fat.

• Excessive eating or drinking.

• Hard exercise.

• Taking a bath or shower.

The most repeatable results from the DF301 / DF311 will be obtained if you use the device at the

same time each day, and if you ensure that your ﬁ ngers are not overly dry when performing the

estimation.

For More Reliable Readings

Since the Yamato ClockMINI (DF301) / ClockNAVI (DF311) use the BIA method, the readings are

inﬂ uenced by body water content. The body’s daily water balance can be affected by several lifestyle

factors including: the nature of your work, physical exercise, eating, drinking, physical condition, etc.

ClockMINI (DF301) / ClockNAVI (DF311), like all devices that use BIA, will give the most consistent

results when the body water content is the same.

CAUTIONS