CASTELLI Endurance 15 Men's Socks Color:Black Silver Grey Red You can even respond to WO62V63 You can even respond to texts if you have an Android™ smartphone TIME AND PACE ✔ RUNNING DYNAMICS ✔ VERTICAL OSCILLATION AND RATIO ✔ GROUND CONTACT TIME AND BALANCE yes (with compatible accessory) STRIDE LENGTH (REAL TIME) ✔ CADENCE (PROVIDES REAL TIME NUMBER OF STEPS PER MINUTE) ✔ RUNNING POWER ✔ GRADE ADJUSTED PACE ✔ PERFORMANCE CONDITION ✔ LACTATE THRESHOLD yes (with compatible accessory) PACEPRO™ PACING STRATEGIES ✔ RUN WORKOUTS ✔ TRAIL RUN AUTO CLIMB ✔ RACE PREDICTOR ✔ COURSE AND WEATHER SPECIFIC RACE PREDICTOR ✔ FOOT POD CAPABLE ✔ RUN WALK STAND DETECTION ✔ Golfing Features PRELOADED WITH 43 Product features Reinforced heel and toe