​M7 Smart Band (A clone of the Xiaomi Mi Band 7)  

​Distinguishing feature: usually has an oval "pill" shape that pops into a silicone strap.

​App: Often uses the FitPro or HryFine app.  

​ID115 Plus Color HR

​Distinguishing feature: The USB charging connector is hidden inside the strap (you pull the strap off the device to charge it).  

​App: Often uses the VeryFitPro or Lefun Health app.

​⚡ Key Features (Based on your description)

​Health: Heart Rate Monitor, Blood Pressure Monitor (often simulated), Sleep Tracking.  

​Fitness: Pedometer (Step Counter), Calorie Counter.  

​Smart: Call & Message Reminders, Remote Camera Control.  

​Waterproof: Usually IP67 (Splash proof, not swim-proof despite the "swimming" keyword often used).