Appendix

Battery Information

Actual battery life depends on use of the following items: GPS, backlight, ANT+ computer connection, and time spent in power save mode.

On a fully charged battery, the Forerunner should last one week if you train for 30 minutes a day with GPS and the Forerunner is in power save mode for the remaining time.

On a fully charged battery, the Forerunner lasts for up to 2 weeks in power save mode.

On a fully charged battery, the Forerunner can last for up to 8 hours with GPS on.

Specifications

Forerunner

Watch size: W × L × D: 1.88 × 2.78

×0.646 in. (47.75 × 70.5 × 16.4 mm) Weight: 2.1 oz. (60 g)

Display: 1.06 in. (27 mm) diameter, 124 × 95 pixels resolution, with LED backlight.

Water resistance: IPX7. Not intended to be used while user is swimming.

Data storage: approximately 20 hours of data (assuming 1 trackpoint is being recorded every 4 seconds).

Memory: up to 1000 laps; 100 user locations (waypoints).

Computer interface: wireless USB ANT Stick

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Forerunner 405 Owner’s Manual