CASIO G-SHOCK Master of G FROGMAN MULTI BAND 6 GWF-D1000B-1JF MENS JAPAN IMPORT Importado Construction:Shock-resistant Water Resistance:ISO 200-meter water resistance Radio Frequency: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 Diving Functions:Measuring range: 0 m to 80 m (252.5 ft.); measuring unit: 0.1 m (0.5 ft.); dive time measurement up to 6 hours (1-second intervals up to 180 minutes, 1-minute intervals after 180 minutes); automatic measurement start/stop at depth of 1.5 meters (5 ft.) and automatic log memory in Diving Mode; surface interval time display (max. 48 hours); excessive ascent rate alarm