CASIO G-SHOCK "GULFMASTER TOUGH MVT. MULTI BAND 6" GWN-1000F-2A Imported Waterproofing function20 standard atmosphere waterproofing BacklightThe double LED right field: LED light (with full Autolite, afterglow function, afterglow time change over (1.5 seconds /3 second)) for letter board, LED backlight (with full Autolite, afterglow function, afterglow time change over (1.5 seconds /3 second)) for LCD part Electric wave automatic repair functionIt is / manual operation reception Japan reception electric wave auto-receipt (up to six times/day) (as for up to five times/day of Chinese electric waves): JJY, frequency: 40kHz/60kHzthe North America region&gt; reception electric wave: WWVB, frequency: 60kHz &lt;the Europe region&gt; reception electric wave: MSF/DCF77, frequency: 60kHz/77 .5kHz &lt;China&gt; reception electric wave: BPC, frequency: 68.5kHz We receive station which we put together in city when we set in city that can receive home thyme setting. In addition, difference in time is set by city that we chose. Product Dimensions: 4.5 x 4 x 3.5 inches; 3.5 ounces