Package Include: Watch X1; manual X1, extra silicone band X1, packed in a black square gift box.
++Battery life :18 months +Function Brief:Compass, Altimeter,Barometer , Thermometer,Weather Forecast, World Time,Dual Time,Pedometer, calorie, distance record,2 sets alarm,Countdown timer ,Stopwatch, EL Backlight.
Watch Size: Diameter: 50mm/1.97in; thickness: 16mm/0.63in; width of band: 24mm/0.94in; net weight: 117g/4.12oz.(since it is a little big and heavy ,please kindly check if it meet your needs)
Materials: Sturdy metal casing paired with a long-lasting and breathable nylon strap (includes an additional silicone strap for replacement), powered by a Japanese battery (CR2032 with an 18-month lifespan).
Waterproof: 50M waterproof, means you could wearing it for swimming (not diving), don't push the button when it is under water, also do not wearing it for hot water bath, it will reduce its life span.