This is the METRIC METRIC METRIC version of the AT-85. Do not order it unless you are familiar with metric units--kilometers, centimeters, kilograms, etc. If you want distance in miles and weight in pounds, then order the AT-85 not the AT-85k. The AT-85k is for those who are familiar with and use METRIC units. If you order and receive the AT-85k which is in metric units but actually need the AT-85 which is in miles, pounds, feet, etc., then you will need to return the metric unit and pay an additional $6.95 shipping and handling fee to exchange for the model in miles, pounds, feet, etc. Therefore, be certain that you order the correct model number. (Pedometer and Instructions) Steps, Distance(km), Activity Time, Calories, & Clock Black AT-85kBB$15.95, 15/$187.50, 30/$360.00 (Pedometer, Security Strap, & Calendar Log) Steps, Distance(km), Activity Time, Calories, & Clock Black AT-85kTT$19.95, 15/$247.50, 30/$480.00 Copyright 2003-2006 NEW-LIFESTYLES INC.