Casio 2981 User Manual page 58

Alarms:
Daily alarms: 3
Settings: Hour, minute
Beeper: 10 seconds
Hourly Time Signal
Beeps twice every hour on the hour
Settings:
Current time and date; seconds reset (±30-second adjust); Home
Time city; summer time on/off; target alarm on/off; target heart rate
upper/lower limits; resting heart rate; age; gender; energy consumed
unit; body weight
Other:
Auto return from setting screens; 12/24-hour timekeeping; EL (electro
luminescent) backlight; alarm test
Chest strap size: 70cm to 120cm, 27.5 in to 47 in (under bust)
Batteries:
Watch: CR2025 (sold separately)
Chest strap: CR2032 (sold separately)
Battery Life:
Watch: Approximately 2 years
• 1.5-second light operation, 10 seconds beeper operation per day;
300 minutes of heart rate measurements per week
Chest strap: Approximately 500 hours
• Continuous use
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