Garmin Forerunner 235 Marsala GPS Watch GPS Watches : The Garmin Forerunner 235 Heart Rate Monitor features innovative Elevate(TM) wrist heart rate technology that measures your heart rate at the wrist, allowing you to experience a more comfortable, strap-free run. When connected to your smartphone it allows audio prompts that include laps and lap times to help motivate you to meet your goals. An easy-to-read color graph shows your heart rate zone at a quick glance so it wont disrupt your rhythm. This watch is the same size as the Forerunner 225 but with a 44% larger screen. Download watch faces, widgets, apps and data fields with Connect IQ. Features Auto Lap(TM) and Auto Pause(TM) training options. Provides pace alerts, interval training, and Virtual Partner(TM) software. Built with a recovery advisor and bike/speed cadence sensor compatible. Activity Tracking counts steps, calories and distance with a move bar and vibration alerts. VO2 Max Estimates predicts race times for several distances when used with heart rate. Provides 11 hours of battery life in training mode and up to 9 days in watch mode. Smart Notifications display incoming emails, text messages, call alerts, calendar reminders and music control. GLONASS capability provides additional GPS accuracy. Garmin Forerunner Watch Comparison