Languageschinese simplified chinese english romother capacity mah68 materialsilicone sim card typeno sim card slot connectivitybluetooth40 fitness wellnessactivity tracker pulsometer exercise reminder sedentary reminder chronograph community share alarm clock find my device stopwatch timer sleep tracker cpunrf51822 ram256mb charging timeh1 waterproof levelipx 7 typesmart bracelet featureslong standby pedometers calories burned heart rate monitor anti lost water res