Withings Activit&eacute; Sapphire | Activity and Sleep Tracking Watch - Swiss-Made Watch case: stainless steel, strap: calf leather, hands: aluminium, dial:brass, buckle: stainless steel Imported Activity Tracking: Records steps, distance and calories burned Recognizes you are running and swimming automatically; Activit is water resistant up to 5 ATM (165 feet or 50 meters) Swiss Made analog watch designed in Paris. Operating temperature: -10 to 45 degree Celsius The Swiss Made Connected Movement is certified for its precision and long lasting accuracy Battery Life: No need to charge your Withings Activit, enjoy up to 8 months of battery life Refer user manual for troubleshooting steps