Design: Often styled like premium watches (49mm, 1:1), featuring bright, large touchscreens (e.g., 2.3-inch AMOLED).
Bundles: Sold as "10-in-1" or "7-in-1" sets, including 7-10 different straps (silicone, metal, nylon) and accessories like screen protectors, wireless chargers, or earbuds.
Connectivity: Bluetooth 5.2 for calls, notifications (calls, texts, apps), music control.
Health & Fitness: Heart Rate, Blood Oxygen (SpO2), Sleep Tracking, Pedometer, Activity Goals.