Loaded with serious training features, Forerunner 405CX continuously records your time, distance, pace, calories burned and heart rate. Every workout is stored in Forerunner’s large internal memory (1,000 laps, 100 locations) so you can review and analyse the data to see how you’re improving. Advanced training features will challenge you to step up your pace – race against Forerunner’s Virtual Partner to improve your times, or set up interval workouts without having to circle the track to keep count. You even can download recorded courses and compete against previous workouts. To use the watch, simply tap the touch-and-scroll bezel control to change screens and select menu options and features while you run, without fumbling for a button.
Run against a Virtual Partner
Compete vs Virtual Partner
Track Heart Rate

Forerunner 405CX comes with a flexible, comfortable wireless heart rate monitor so you can see how hard your heart is working for a true measure of your fitness. This digital monitor continuously tracks heart beats per minute and uses this data for advanced calorie computation, so you know how many calories you’re burning. Train in a certain heart rate zone to improve your fitness level or compare your pace and heart rate against previous attempts at the same run to see how your fitness is improving.
Share Workouts Wirelessly

Forerunner 405CX lets you share your locations, advanced workouts and courses wirelessly with other users so you can try your friends’ training sessions or race against their times. Just select ‘transfer’ to send your information to a nearby device.
Forerunner 405 CX
Forerunner 405 CX
Run, Sync, Store and Share

Once you’ve logged the miles, Forerunner’s innovative ANT+ wireless technology automatically transfers data to your computer when it is in range of your PC or Mac computer. No cables required, the data’s just there ready for you to analyse, categories and share through our free online training community Garmin Connect. You can even plan workouts on your computer and send them to Forerunner 405CX for your next training session.
Forerunner 405 CX
Forerunner 405 CX
Train All Year Round

Take your training inside with the versatile Forerunner 405CX and optional wireless accessories. Pair it with an optional foot pod to track your pace, distance and running cadence indoors where GPS signals are unavailable. The wireless foot pod clips onto your laces or fits into the sole of a compatible training shoe and automatically switches on when you start moving. Or pair your Forerunner with an optional speed/cadence bike sensor to track the speed and distance of your rides.
Box Contains
# Forerunner 405CX
# USB ANT Stick™
# Heart rate monitor
# Wrist straps
# Charging clip
# AC adapter
# Owner’s manual on disk
# Quick start manual

Listen to Your Heart. Forerunner 50 with wireless heart rate effectively tracks and records your heart rate while you work out, providing instant feedback about how hard your heart is working. The included digital heart rate monitor continuously tracks heart beats per minute which is wirelessly transmitted to the Forerunner 50. Even train in a certain heart rate zone to improve your fitness level. And well after your workout is done, Forerunner 50 is still working, wirelessly transmitting your training data to your PC.

Run, Sync, Store and Share. You’ve logged the miles and now you want to store them. With Garmin’s innovative optional ANT+Sport wireless technology, your workouts are automatically transferred to your computer when your device is within range. No cables, no hookups. The data’s just there, ready for you to analyse, categorise and share through our online community, Garmin Connect, or our Garmin Training Center software.