Only by inputting his/her gender, the best running time for 5 km, and the number of sets of interval training, the optimum target times are calculated using a proprietary algorithm developed by ASICS Institute of Sport Science. The watch shows the lapse of each target time on the display, and gives out beeping sounds when it expires, to help the runner do interval training effectively.
Interval training consists of two phases in which the runner runs at a fast speed or sprints and runs at a slow speed or jogs.
By alternating those phases continuously, this training method can strengthen the runner's leg muscles as well as cardiac and pulmonary functions efficiently, thus increasing running speed.
●Plastic Case ●Stainless-steel bezel ●Stainless-steel caseback ●Acrylic glass ●Urethane band ●Water resist 5 bar ●Interval Timer ●1/100 sec chronograph（150 Lap） ●Timer 2ch（Double repeat） ●Alarm 3ch（Daily） ●Data Recall (Chronograph) ●LED Backlight ●Power saving function ●Display contrast adjustment ●Battery life : Approx. 3 years
●Case size : 44.9 mm (between 3 and 9 o'clock positions) ●Case thickness : 12.06 mm ●Weight : 42 g ●Suitable wrist size : 130 to 190mm