Large Symmetrical AMOLED Display:
The device boasts a prominent 1.74-inch rectangular AMOLED screen enclosed by ultra-narrow, symmetrical bezels. It offers a razor-sharp 480 × 336 pixel resolution (336 PPI) and a smooth 60Hz refresh rate, ensuring that animations look fluid and text remains incredibly easy to read.
Ultra-Bright Sunlight Visibility.
Engineered to handle harsh outdoor lighting, the display cranks out an impressive 1,500 nits of full-screen global brightness and hits up to 2,000 nits of peak brightness. This massive 33% increase over previous generations guarantees that your metrics stay completely visible even under direct midday sunlight.
Slim Aluminum or Luxury Ceramic Build.
The standard edition features a durable, high-strength aluminum alloy frame that is a mere 9.7 mm thin and weighs just 21.6 grams, offering an exceptionally lightweight, "barely-there" feel. For a more premium aesthetic, a luxury Ceramic Edition is available, utilizing a smooth, polished ceramic shell paired with a high-end fluororubber strap.
Independent Five-Satellite GNSS.
Equipped with a built-in, independent Global Navigation Satellite System (GNSS), the band tracks your outdoor routes without requiring a connected smartphone. It supports five major satellite positioning networks—GPS, GLONASS, BeiDou, Galileo, and QZSS—giving runners and cyclists precise pace and distance data.
Upgraded PPG Health Module.
The band utilizes an all-new PPG optical sensor module layout featuring dual light sources and dual photo-diode sensors. Combined with Xiaomi's latest hardware algorithms, this configuration drastically increases the accuracy of continuous heart rate monitoring, stress evaluation, and 24/7 blood oxygen ($SpO_2$) tracking.
Sleep Algorithm 2.0 & HRV.
Developed in collaboration with professional global sleep organizations, the updated tracking suite introduces average Heart Rate Variability (HRV) monitoring during rest. The specialized Sleep Algorithm 2.0 boosts sleep onset, wake detection, and sleep stage tracking accuracy by up to 14% to deliver deeper recovery metrics.
Massive 150+ Sports Matrix.
Fitness enthusiasts can choose from over 150 dedicated sports modes, ranging from standard gym training to outdoor tracking. The software includes built-in 3D on-screen warm-up and cool-down video guides, specialized on-wrist running courses, and smart pacing tools to act as a virtual coach.
Unique Dual-Device Message Sync.
Ideal for multi-phone users, the smart band supports concurrent dual-device message synchronization. It allows you to link and receive incoming calls, text messages, and app notifications from both a Xiaomi device and an iPhone simultaneously, ensuring you never miss an alert.
Three-Week Battery Life.
Packed with a 350 mAh cell, the device delivers a stellar 21 days of operation under light usage conditions. Even with continuous, full-time health monitoring and normal daily tracking enabled, it comfortably stretches up to 15 days on a single charge (or 8 days with the Always-On Display active).
5ATM Waterproofing & Swim Metrics.
With a certified 5ATM water resistance rating, the band is fully submersible up to an equivalent depth of 50 meters. It safely handles swimming pools and shallow-water coastal activities, tracking real-time swimming efficiency alongside an underwater heart rate monitor function.