Just to echo sph, get an Omron device. Don't waste your time and money with the many random brands.
Omrons are accurate and reliable, and most new models like the Silver have bluetooth and with the Omron connect app will share the data with Apple Health if that's your platform, or you can just keep it in the app and it gives you trends and insights.
Omrons are accurate and reliable, and most new models like the Silver have bluetooth and with the Omron connect app will share the data with Apple Health if that's your platform, or you can just keep it in the app and it gives you trends and insights.