Languagesmulti language capacity mah90 materialsilica gel pc polycarbonate connectionbluetooth 42 brandlenovo typesmart bracelet featuressleep tracker water resistant water proof information touch screen sports health care exercise record pedometers calories burned community share heart rate monitor modelhw01 supported operation systemios android screen typedisplay technologyoled stand by timeh120 150 listing date06162017 production modeexternal procurement