Upgrade your Flash Player to version 8 to view this video! ( Click here for the download ) Video on your website var so = new SWFObject RS300X, 425, 355, 8, #ffffff); so.write(RS300X); For enthusiast runners You want to go for a run and know how speed and distance can aid your performance. Without heart rate, you can only get so far. The RS300X combines these three to give you a true understanding of the effort you put in. And on top, all the essential heart rate features come along RS300X, on the run and online. Measures your heart rate combined with speed and distance Helps you to train at the right intensity with personal training zones Displays how many calories youve burned Tracks your latest 16 training sessions and your last 16 weeks of training Transfers training data to with optional Polar FlowLink [ RS300X ] [ RS300X G1 ] Basic features Automatic/Manual target zone (% / bpm / HRR%) Backlight Display zoom Easy start (setting wizard) Event Countdown Timer Graphical target zone indicator Heart rate (displayed as % of maximum heart rate) Heart rate (displayed as bpm) HeartTouch , button-free operation of wrist unit KeyLock Over-sized display User configurable displays Visual and audible alarm in target zones Water resistant - 50m two lines Cycling features Bike mount - opt. Data transfer Compatible with with Polar FlowLink GPS features Battery type - opt. Full power mode (up to 30 hours with an optional lithium battery) - opt. Low battery indicator - opt. Low power battery mode - opt. SIRF-III chipset - opt. Shock resistant - opt. Speed and Distance - opt. WAAS support (wide area augmentation system) - opt. Water resistant - opt. Language features Display text in English, German, French and Spanish Polar exercise features Automatic lap recording - opt. Average heart rate of each lap Average heart rate of total exercise Exercise Date Exercise Set (extended exercise profiles) HR-based target zones with audible alarm - 3 HR-based target zones with visual alarm - 3 HRmax (Polar Fitness test-based) HRmax (age-based) Interval trainer (HR, pace, distance) guided workouts Maximum heart rate of each lap Maximum heart rate of total exercise Number of laps - 99 Polar Fitness Test with OwnIndex Polar OwnCal Polar OwnCode (5kHz) Polar OwnZone Polar sport zones Speed-based target zones with visual and audible alarm - opt. Wireless ECG accurate heart rate ZoneLock ZonePointer Recording features Average heart rate Calorie expenditure - exe.total Exercise Time (total) Exercise file info page with date and time Lap info Last OwnIndex Maximum heart rate Number of exercise files (with summaries) - 16 Target zone limits Time in target zone Running features Distance summaries G1 GPS Sensor - opt. Run Distance Polar S1 foot pod - Included Speed displayed in pace, or kmph/mph Speed/Pace and Distance - opt. Speed/Pace summaries Speed/Pace target zones Target pace Target pace alarms Time and Distanced based interval timer Totals mileage, kilocalories, time training Trip Odometer Transmitter belt Polar WearLink + 31 coded transmitter (changeable battery) Watch features Alarm with snooze Date and weekday indicator Dual time zone Low battery indicator StopWatch Time of day (12/24h) with alarm