Amazfit Active Max Gets Lactate Threshold Tracking and Sleep Improvements in Latest Update

The Amazfit Active Max smartwatch is receiving a significant update with software version 3.7.0.1, bringing advanced running metrics and sleep tracking improvements to the popular fitness wearable. This update follows the mid-March 2026 release of version 3.4.0.3, which introduced a dedicated Podcast app and new workout modes including Rucking and Hybrid Training activities.

The headline feature in this latest update is the addition of Lactate Threshold measurement, a metric that's becoming increasingly important for serious runners and endurance athletes. Lactate threshold represents the exercise intensity at which lactate begins to accumulate in the bloodstream faster than it can be removed, essentially marking the transition between comfortable aerobic exercise and more intense anaerobic efforts.

For runners, this metric is particularly valuable because it helps identify the optimal training zones for improving endurance and performance. By knowing their lactate threshold, athletes can structure their workouts more effectively, alternating between high-intensity intervals above the threshold and recovery periods below it. The feature allows users to either manually trigger a Lactate Threshold Test through the menu path (Workouts > Select a Running Sport > Settings > Training > Lactate Threshold Test) or enable automatic measurements that capture data over time.

This functionality isn't entirely new to the Amazfit ecosystem – the Lactate Threshold metric has already been rolled out to other models including the T-Rex 3 Pro, Balance 2, and Active 3 Premium. The expansion to the Active Max means more users can access this sophisticated training tool without upgrading to higher-end models.

Beyond the running-specific features, Amazfit has also focused on improving the watch's sleep tracking capabilities. The update includes optimizations to the sleep staging algorithm, which should now more accurately detect the three primary sleep stages: Light, Deep, and REM sleep. This enhancement could provide users with more reliable insights into their sleep quality and recovery, which is crucial for both athletic performance and overall health.

While Amazfit hasn't disclosed specific details about the system optimizations and bug fixes included in version 3.7.0.1, such updates typically address performance issues, improve battery life, and resolve any software glitches that may have been affecting user experience.

The update is currently rolling out in phases to Amazfit Active Max users, who can check for availability through the Zepp app. Given Amazfit's typical rollout schedule, users may need to wait a few days or even weeks before the update becomes available in their region.

At its current price point of $169.99 on Amazon, the Active Max positions itself as a mid-range smartwatch that's increasingly packing features typically found on more expensive fitness-focused wearables. The addition of lactate threshold tracking, combined with the existing comprehensive health and fitness monitoring capabilities, makes it an attractive option for runners who want advanced training metrics without the premium price tag of dedicated sports watches.

The update demonstrates Amazfit's commitment to improving its devices post-purchase through software enhancements, a strategy that helps extend the useful life of their products and provides ongoing value to existing customers. As wearable technology continues to evolve, such regular updates that add meaningful features rather than just bug fixes are becoming an important differentiator in the competitive smartwatch market.