Compare Polar F4 Heart Rate Monitor (Black Thunder) Watch for Women to Timex IronMan Road Trainer Heart Rate Monitor Watch

The Polar F4 Heart Rate Monitor is a light and trim model, designed for active lifestyles. Ideal for women, it's easy to use and provides data for current, average and maximum heart rate. The Polar F4's additional features include an adjustable target zone, ZonePointer function which make sure your workout stays at the right intensity level and has Polar's Owncal functionality. An ideal training partner. Features include: Zone Pointer: visual guidance to target zone. Polar OwnCal???. Fitness Points (every 10 min. in target zone). Display of current heart rate, percentage of maximum heart rate and training time. Storage of previous workout, including date, average and maximum heart rate, time spent in target zone, training time and calories burned. Storage of cumulative training time and calories burned, as well as total number of workouts and average workout frequency. Integrated clock with date, weekday and alarm. UpLink function: transmittion of training settings to pulse watch. Audible and visible alarm . Less

The Timex IronMan Road Trainer features the latest styling, features, and digital transmission technology. EKG-accurate continuous heart rate measurement Five automatic target zones and one manual zone Time in target zone Recovery heart rate timer Selectable percent of max or BPM heart rate display Workout average and peak heart rate 50 lap memory recall with heart rate data Customizable 2-line LCD display Calories burned during workout Displays lap and split times 100 hour Countdown timer with selectable auto-repeat and alarm Allows recall of: Total workout time, time in zone, avg/min/max heart rate, calories burned, recovery heart rate, lap/split recall 100 hour chronograph with lap and split 50 lap memory with average heart rate per lap Time of day with calendar and alarm Indiglo night-light for easy low-light viewing Water resistant to 100m Includes digital coded chest transmitter strap with user-replaceable battery Elastic strap fits chest sizes from 25 inches to ... Less