Take measurement:

Long press the ‘M’ button for 2 seconds to switch between the measurement units. Pull out the tape and measure object`s length, circumference etc. Measure from the joint between the tape and buckle back to the point where the tape enters the device enclosure.

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When measuring the circumference, please insert and lock the buckle into the tape slot, then long press the retract button to ensure that the tape fits the object`s measurement part. After completing circumference measurement, press the eject button of the tape to unlock the buckle.