About this item

• With 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 tracking. Connectivity – Bluetooth 5.0. Resolution:120 x 240 RGB
• Start your day right by understanding your sleep pattern with accurate light and deep sleep monitoring
• 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 be. Compatible with Android 4.4 or later/iOS 9.0 or later. Body material:Polycarbonate
• Up to 20 days of long lasting battery life for uninterrupted performance
• With the band on your wrist, you can receive text messages, silence or reject calls, and get social media notifications instantly