Accuracy: ±15 seconds per month (non-receiving), Photovoltaic: 12 months (with power saving), Functions: Perpetual Calendar, Time zone difference, Water resistant: 20 ATM Glass: Spherical sapphire glass (anti-reflective coating), Case: Super titanium, Band: Super titanium Additional specifications: nickel-resistant, anti-magnetic Class 1, luminous (hands and indexes), screw-lock crown, fit adjuster Details: The Eco-Drive radio-controlled watch with day and date, the driving force behind the LAND series, is now available in two simple yet distinctive colors. It is an Eco-Drive radio-controlled watch with a day and date function. The rhythmic arrangement of Arabic numeral indexes enhances legibility. The screw-locked crown has a military-style finish with a patterned pattern. It adds a subtle accent to the simplicity of the watch. The band and dial are finished in black, and the indexes are colored and luminescent for easy reading even in dark places.