Specifications
Model
Timekeeping accuracy
(without reception)
Operating temperature
range
Display functions
Maximum run time from full
charge
Battery
36
B620
Type
Within ±15 seconds per month when worn at normal operation
temperatures between +5˚C (41°F) and +35˚C (95°F)
–10˚C (14°F) to +60˚C (140°F)
• Time: Hours, minutes, seconds, 24-hour
• Calendar: Date,
• Fully charged to fully discharged:
Approximately 9 months (when using the chronograph for an
hour a day)
• Power reserve upon insufficient charge warning function:
Approximately 8 days
Rechargeable cell (lithium button cell), 1pc.
Analog solar-powered watch