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Forerunner 405CX Owner’s Manual 41
Appendix
Battery life: up to 8 hours in GPS
mode; up to 2 weeks in power save
mode.
Operating temperature range:
From 5°F to 122°F (from -15°C to
50°C)
Charging temperature range:
From 32°F to 122°F (from 0°C to
50°C)
Radio frequency/protocol: 2.4
GHz/Dynastream ANT+ wireless
communications protocol
GPS Antenna: internal patch
GPS Receiver: high-sensitivity
integrated
USB ANT Stick
Physical size: L × W × D: 2.32 ×
0.71 × 0.28 in. (59 × 18 × 7 mm)
Weight: 0.01 lbs. (6 g)
Transmission range: Approximately
16.4 ft. (5 m)
Operating temperature: From 14°F
to 122°F (from -10°C to 50°C)
Radio frequency/protocol:
2.4 GHz/Dynastream ANT+ wireless
communications protocol
Power source: USB
Heart Rate Monitor
Physical size: L × W × D: 13.7 × 1.3
× 0.4 in. (34.7 × 3.4 × 1.1 cm)
Weight: 1.6 oz. (44 g)
Water resistance: 32.9 ft. (10 m)
Transmission range: approximately
9.8 ft. (3 m)
Battery: user-replaceable CR2032
(3 volts)
Battery life: approximately 3 years
(1 hour per day)