Casio G-Shock GWN1000B Master of G Series Quality Watch - Black / One Size - GWN-1000B-1BJF

• Radio frequencies: 77.5 kHz (DCF77: Germany). 60 kHz (MSF: UK). 60 kHz (WWVB: USA). 40 kHz (JJY: Fukushima, Japan) / 60 kHz (JJY: Kyushu, Japan). 68.5 kHz (BPC: China) Radio wave reception: Automatic reception up to six times a day (except for use in China: up to five times a day). manual reception Digital compass: Measures and displays direction as one of 16 points with the second hand. measuring range: 0 to 359. measuring unit: 1. 60 seconds continuous measurement. bidirectional calibration and magnetic declination correction Barometer: Measuring range: 260 hPa to 1,100 hPa (7.65 to 32.45 inHg). measuring unit: 1 hPa (0.05 inHg). atmospheric pressure change indicator (10 hPa). atmospheric pressure tendency graph (past 20 hours graph display). barometric pressure tendency Altimeter: Measuring range: -700m to 10,000m (-2,300 to 32,800 ft). measuring unit: 1m (5 ft). altitude change indicator (100 m / 1000 m). others: measurement interval setting (every 5 seconds / every 2 minutes) (1 second for first three minutes on