|High accuracy of the quartz clock spring drive and the only power source power mainspring wound to solve while also: month difference ± 15 seconds （ daily rate ± 1 second per ） SEIKO realized the unique drive mechanism. SEIKO this mechanism in the world first commercialized in 1999 at the time was wound by hand, but with automatic winding （ bird nesting hand ） in 2004, improved maximum winding time duration.
CAL.5R66 automatic self-winding spring drive further evolved, 24 are equipped with GMT function (*) along with additional hour. Spring drive is because no weak impact of specific mechanical watch escapement, while being driven by the same mechanical clock mainspring has excellent impact resistance. As long as your position in the arms do not use any batteries not worry about running out of battery, the drive in a clean energy. 24-Hour GMT function allows suitable for use in overseas. The 24-hour hand can be used as a compass, you can check the orientation in the position of the Sun.
* Tandem date time difference adjustment function with ※ 日付 連動 式 の 時差 修正 機能 付き で 単独 時差 可能 修正 。 single bias can be fixed. Readable of the two countries this time difference is time.
||Pure titanium （ ダイヤシールド ）
||10 ATM water resistant
|Features & notes
||Sapphire glass (Super clear coating)
Power reserve indicator
Second hand stop function
|The warranty period
||Regular manufacturers warranty 1 year|
|JP Post EMS|
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Start Date:01/07/2015 00:00 JST
End Date:31/07/2015 23:59 JST
Start Date:06/07/2015 00:00 JST
End Date:29/09/2015 23:59 JST
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