Xiaomi Watch S1, Black (BHR5559GL) - Sapphire glass, Stainless steel case, Leather strap | 1.43" AMOLED display, Display resolution: 466x466 | Dual-band GPS | All-day heart rate and SpO2 monitoring | Battery capacity: 470mAh; up to 12 days typical usage mode, 24 days Power Saving Mode | Water resistance rating: 5 ATM | Sensors: Heart rate sensor (with blood oxygen sensor), accelerometer, gyroscope, geomagnetic sensor, atmospheric sensor, ambient light sensor

Xiaomi Smart Band 8 Graphite Black - 1.62 inch AMOLED Touch Display | Resolution: 192 x 490 pixels | Brightness: up to 600 nits, adjustable | High precision 6-axis sensor, PPG heart rate sensor, Ambient light sensor | Charging time: approx. 1 hour | Typical use time: ? 16 days | Bluetooth 5.1 BLE | Compatibility: supports smartphones with Android 6.0/ ios 12.0 and above

Xiaomi Smart Band 8 Active, Black - 1.47" LCD display | 50+ sports modes | All-day sleep, heart rate and SpO2 monitoring | Slim 9.99mm body for optimal comfort | 100+ watch faces to match any style | Up to 14-day battery life, 5ATM water resistance

Xiaomi Smart Band 8 Pro - Massive 1.74" rectangle AMOLED display | 22.5g lightweight design, 9.99mm slim body | Up to 14-day battery life, 5ATM water resistance | Supports 150+ sports modes, built-in GNSS

Xiaomi Smart Band 9, Black - 1.62'' AMOLED display for seamless interaction | Up to 21-day battery life | Better vibrational response; Enjoy a more intuitive experience with haptic feedback from the linear motor | With an AMOLED peak display brightness of 1200 nits, view data with ease even under direct sunlight | Classy, vibrant all-metal design | High precision sensor; More accurate tracking |