Xiaomi Smart Band 9 Active – Specs & Highlights

Dimensions: 45.9 × 26.94 × 9.99 mm

Weight: ~16.5 g (without strap)

Strap: TPU, adjustable length 135-215 mm

Display

Size: 1.47-inch TFT

Refresh rate: 60 Hz

Resolution: 172 × 320 pixels, ~247 PPI

Cover: Reinforced glass

Sensors & Tracking

Heart rate sensor (PPG)

SpO₂ tracking

Accelerometer

Sleep tracking

Stress measurement

Women’s health tracking

Fitness & Durability

Sports modes: 50+

Water resistance: 5 ATM

Battery

Capacity: 300 mAh

Charging: Magnetic, full charge ~120 minutes

Life: up to 18 days typical use, ~9 days heavy use

Connectivity

Bluetooth 5.3 BLE

App: Mi Fitness

Compatible with Android 8.0+ / iOS 12.0+