Watch HD movies and games roar to life. The heart rate sensor lets you measure your heart rate through your fingertip Plus, monitor your health with the custom services offered by S Health. Log and check your exercise, food intake and heart rate in real time. A rugged build for outdoor use An IP67 certification means this phone is dustproof and can be submerged in up to a meter of water for up to 30 minutes. Ultra Power Saving mode lets you keep your phone powered on for longer in between charges This mode changes your screen to black and white and shuts down all unnecessary features to dramatically minimize battery consumption.