Display: 1.75″ AMOLED / IPS (depending on model), always-on display option

Sensors: Heart rate, SpO₂, Steps, Sleep tracking

Connectivity: Bluetooth 5.x, notifications from Android/iOS, maybe music controls

Battery: upto X days on regular use, Y hours with continuous tracking

Water Resistance: IP rating (e.g. IP68)

Build: Metal / strong polymer body, strap options (silicone / leather etc.)

Apps / Compatibility: Works with [brand] app, supports watch faces, alarms, etc.

Great value vs premium brands 

Durable for day to day + light workouts 

Stylish enough to wear to work / casual outings 

Good battery so less frequent charging