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| Feature | The Mi Smart Band 4 features a 39.9% larger (than Mi Band 3) AMOLED color full-touch display with adjustable brightness |
| Feature | so everything is clear as can be |
| Feature | With music control on the band you can change the song |
| Feature | increase/decrease the volume and groove on without even touching your phone |
| Feature | With a sturdy 5ATM waterproof built |
| Feature | you can now take your band for a swim. It auto detects your swim style and captures 12 detailed data points for tracking |
| Feature | Health and wellness tracking at its best with 24/7 automatic heart rating monitoring and alerts to warn you when the heart rate is high |
| Feature | Style the band display as per your mood with unlimited watch faces. Simply pick a photo from your gallery and set it as your watch face |
| Feature | With the band on your wrist |
| Feature | you can receive text messages |
| Feature | silence or reject calls |
| Feature | and get social media notifications instantly |
| Feature | Up to 20 days of long lasting battery life for uninterrupted performance |
| Feature | Start your day right by understanding your sleep pattern with accurate light and deep sleep monitoring |
| Feature | 30+ features rolled into one band |
| Feature | your perfect companion |