The first charge can be charged for 3 to 4 hours, the next hour can be fully charged, and the monitor can be unplugged when it is fully charged. Now they are lithium batteries, but it is not good to charge them for too long. So once it's full, you don't have to wait for hours to refill it.
It is composed of touch screen, wristband and other components, equipped with IP57 waterproof and dustproof PMOLED touch screen, 0.73 inch screen, body thickness 11.5mm Talk B 2 can support Bluetooth call, sleep monitoring, step counting, calorie counting, sedentary reminder, hyperlink range reminder, scene reminder and other functions.