The AirBP blood pressure monitor is one of the smallest and lightest sphygmomanometer for the arm. He has a durable battery and is therefore wireless. A battery charge can work for up to half a year.
For this device there is a free app for iOS or Android, so you van easily transfer your measured dara via Bluetooth.
For the blood pressure you will receive a cuff of 22-42 cm, additional cuffs are available.