Case size (H× W× D): 54.7 × 51.7 × 15.1 mm Weight: 54 g Case / bezel material: Mineral glass (biomass plastics) Band: Soft urethane band (biomass plastics) Water resistance: 100-meter water resistance Solar powered Super Illuminator: Full auto LED light, selectable illumination duration is 1.5 seconds or 3 seconds. (LED:White) Environmental resistance: Low-temperature resistant (-10/14) Altimeter: Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measuring unit: 1 m (5 ft.) Manual memory measurements (up to 30 records, each including altitude, date, time) Auto log data (High/low altitudes, auto cumulative ascent and descent) Trek log data (up to 14 records of high/low altitudes, auto cumulative ascent and descent of particular treks) Barometer: 260 to 1,100 hPa (Barometric pressure tendency information alarm (beep and arrow indicate significant changes in pressure) Display unit: 1 hPa (0.05 inHg) World time: 31 time zones (48 cities + coordinated universal time), daylight savi