1.81 inches(4.59cms) TFT display, 240*280px, Always on display - No, 550 nits brightness - Enjoy clear and vibrant visuals on its big and bright TFT display. Up to 7-day battery life - Get up to 7 days of battery life & up to 2 days of power with calling activated. (Battery life can vary due to multiple factors such as turning on continuous HR tracking or turning up the brightness) Charging - The smartwatch features a 260mAh battery that takes approx. 2.5 hours to fully charge. It is recommended that you use a 5W power adapter. Please avoid using a fast-charging adapter to prevent future watch damage. Music playback - The smartwatch features a remote music control feature that lets you control music played on your phone as long as your smartphone and smartwatch are in Bluetooth range. However, it cannot be used to store music.