Double LED light. For the face and backlight: full auto LED light, Solar powered Low-temperature resistant (-10C/14F) The auto hand home position correction Digital compass
selectable illumination duration, afterglow
Quartz Movement; Altimeter Measuring range: 700 to 10,000 meters
Case Diameter: 52mm. Digital compass measuring range is 0 to 359 degree
Water resistant to 100m (330ft): in general, suitable for swimming and snorkeling, but not diving; Accuracy: 15 seconds per month
Approx. battery operating time: 7 months on rechargeable without exposure to light after charge. 25 months when stored in total darkness with the power save function on after full charge.
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