42 Forerunner 310XT Owner’s Manual
Appendix
Specications
Forerunner
Watch size, without straps:
W × L × D: 2.13 × 2.20 × 0.75 in.
(54 × 56 × 19 mm)
Weight: 2.5 oz. (72 g)
Display: 1.3 × 0.8 in. (33 × 21 mm),
160 × 100 pixels resolution, with
LED backlight.
Water resistance: surface 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: USB ANT
Stick
Battery type: 700 mA rechargeable
lithium-ion battery
Battery life: up to 20 hours, typical
use.
Operating temperature range:
From -4°F to 140°F (from -20°C to
60°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)
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