The Mi Smart Band 4 features a 39.9% larger (than Mi Band 3) AMOLED color full-touch display with adjustable brightness, so everything is clear as can beWith music control on the band you can change the song, increase/decrease the volume and groove on without even tou...

The Mi Smart Band 4 features a 39.9% larger (than Mi Band 3) AMOLED color full-touch display with adjustable brightness, so everything is clear as can beWith music control on the band you can change the song, increase/decrease the volume and groove on without even touching your phoneWith a sturdy 5ATM waterproof built, you can now take your band for a swim. It auto detects your swim style and captures 12 detailed data points for trackingHealth and wellness tracking at its best with 24/7 automatic heart rating monitoring and alerts to warn you when the heart rate is highStyle the band display as per your mood with unlimited watch faces. Simply pick a photo from your gallery and set it as your watch faceWith the band on your wrist, you can receive text messages, silence or reject calls, and get social media notifications instantlyUp to 20 days of long lasting battery life for uninterrupted performanceStart your day right by understanding your sleep pattern with accurate light and deep sleep monitoring30+ features rolled into one band, your perfect companion