D20 smart bracelet

• Display: ~ 1.4″ TFT / color screen — compact and easy to read 

• Connectivity: Bluetooth — works with Android & iOS phones

• Battery & Power: ~ 50 mAh battery; typically 5–10 days use per charge, with ~20 days standby 

• Water Resistance: IP67 waterproof / splash-/sweat-resistant — good for everyday use 

✅ Main Features & Health / Fitness Tracking

• Heart rate monitoring (24/7) 

• Blood pressure & blood-oxygen (SpO₂) tracking (on supported variants)

• Step counter, distance & calorie tracking (pedometer / activity tracker) Sleep tracking / sleep monitoring

• Activity / sport modes / general exercise tracking