You can connect wearable devices through the application of sector S-03, which provides you with a complete, unified and convenient experience.After connecting the bracelet, you can choose to turn on the health switch in the message interface to synchronize the step, distance and calories to apple health. In order to download the Instruction Manual please find the related information on Sector No Limits website or just access below website and insert the model number. http://mid.morellato.com/usermanual/