Zepp Coach is the Amazfit Balance's headline differentiator — an AI-driven training system that generates fully personalised running, cycling, and strength training plans based on your fitness level, VO₂ Max, recovery status, and stated goals. Unlike generic workout mode counters, Zepp Coach dynamically adjusts your weekly plan based on your actual performance, fatigue levels, and Training Readiness Score. It learns from your completed workouts and adapts intensity and volume over time, functioning more like a digital personal trainer than a passive fitness tracker. Plans are structured week-by-week with specific session targets for distance, pace zones, and effort levels. The system is powered by Zepp's cloud AI and refreshes recommendations through the Zepp app. For runners and cyclists who want structured training guidance without a separate coaching app or subscription, Zepp Coach provides meaningful and actionable guidance directly from the wrist.

The Amazfit Balance features a large 1.5-inch AMOLED display with a 480×480 pixel resolution and a peak brightness of 2000 nits — making it one of the brightest displays in the mid-to-upper mid-range smartwatch category. At 2000 nits, the screen remains clearly readable even in harsh direct sunlight during outdoor runs, cycling sessions, or hiking, where lower-brightness displays become difficult to use without manually shading the screen. The round display supports Always-On Display mode, which can show time, date, heart rate, and step count without waking the full screen, helping preserve battery while keeping key metrics accessible at a glance. The higher resolution of 480×480 over many competitors results in noticeably crisper watch face text and health data readouts. Corning Gorilla Glass 3 provides the scratch protection layer.

The Amazfit Balance uses dual-band GPS supporting both L1 and L5 frequency bands across five satellite systems — GPS, GLONASS, BeiDou, Galileo, and QZSS. L5 is a newer, more precise GPS frequency that dramatically reduces multipath error — the signal distortion caused by GPS signals bouncing off buildings, trees, and terrain before reaching the watch. In practical terms, this means significantly more accurate route tracking in urban environments, narrow trails with tree canopy, and mountainous areas where standard L1 GPS frequently drifts. For runners who track routes through cities or use post-run map replays for training analysis, the accuracy improvement over single-band GPS is tangible and consistent. Dual-band GPS also improves pace accuracy during speed work, where second-by-second position updates are critical to meaningful split data.

The Amazfit Balance includes a bioelectrical impedance analysis (BIA) sensor on the watch back for on-demand body composition measurement. By placing two fingers on the watch's side buttons while the sensors contact the wrist, the watch sends a low-level electrical current through the body to estimate body fat percentage, muscle mass, bone mass, hydration level, and metabolic rate — all directly from the wrist without scales or dedicated body composition devices. This feature is rarely found at the Amazfit Balance's price point; it is typically reserved for high-end smartwatches like the Garmin Index or dedicated fitness trackers. Results sync to the Zepp app where trends can be tracked over weeks and months. While BIA accuracy varies compared to clinical DEXA scans, consistent wrist-based measurements taken under similar conditions provide useful relative trend data for users monitoring body composition changes through diet or training.

The Amazfit Balance packs a thorough health monitoring feature set led by a 24/7 optical heart rate sensor, SpO₂ blood oxygen tracking, skin temperature sensing, and an ECG sensor for single-lead electrocardiogram readings to detect potential atrial fibrillation. The ECG readings are accessible on-demand and results are viewable in the Zepp app where they can be shared as a PDF. A stress monitoring system uses heart rate variability to provide a continuous stress score throughout the day, while the readiness scoring engine synthesises overnight HRV, resting heart rate, sleep quality, and previous training load into a single daily Training Readiness score. Advanced sleep tracking covers light, deep, REM, and nap stages with a Zepp-generated Sleep Quality score. A menstrual cycle tracker rounds out the health feature set for female users. The Zepp app aggregates all data into long-term trend dashboards for monthly and yearly health pattern analysis.

The Amazfit Balance runs on a 475mAh battery that delivers up to 14 days of typical use — a strong figure for a watch with an AMOLED display, Always-On Display capability, 24/7 heart rate monitoring, and SpO₂ tracking continuously active. With GPS active continuously during workouts, battery life drops to approximately 18–20 hours per session. With Always-On Display enabled throughout the day, the typical battery life reduces to around 8 days. The watch charges fully in approximately 2 hours via a magnetic charging cable. The underlying operating system is Zepp OS 3, Amazfit's proprietary platform — lighter and more power-efficient than Wear OS but with a smaller third-party app ecosystem. Key built-in integrations include Alexa voice assistant access, Spotify music control (requires paired phone), and a Zepp app marketplace with fitness, productivity, and utility apps. Watch faces are downloadable from the Zepp store, with user-uploadable photo watch faces also supported.