• 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

For 25 years G-Shock G-Shock digital watches are the ultimate tough watch. Providing durable、 waterproof mens digital watches for every activity. G-Shock is the ultimate tough watch. It was born from a developer's dream of "creating a watch that never breaks." Guided by a "Triple 10" development concept、 the design teams sought a watch with 10-meter free-fall endurance、 10-bar water resistance and a 10-year battery life.

The new Gulfmaster ocean concept G-Shock that predicts weather changes. For the toughest men who challenge the deepest seas、 Casio presents the ultimate maritime G-Shock with Smart Access technology.Equipped with Triple Sensors for Measuring Direction、 Atmospheric Pressure/Altitude、 and Temperature Hands Serve to Indicate Atmospheric Pressure and Compass Bearing. The GWN1000B-1B Gulfmaster is a black watch with a blue face and ion plated stainless steel bezel.

• Triple Sensor
• Smart Access
• Tide Function
• Tough Solar Power
• Shock Resistant
• Tough Movement
• Auto hand home position correction

We are Japanese seller living in Japan.
We promise to supply genuine product in Japan.
If you have questions please feel free to ask us.

All items are delivered from Japan directly and it takes one to two weeks to deliver to your country.
Sometimes deliveries could be delayed for local situation.
Some product is supplied from manufacturer due to stock situation.
Electric appliances - Please check voltage before your purchase.Some product is only for 110V for Japan use and you need transformer.
Pre sale product - Please ask updated release day before purchase
Import duties、 taxes and charges are not included in the item price or shipping charges.These charges are the buyer's responsibility.

Please feel free to ask if you have the product which I do not list.I will do my best to provide at competitive price.