Across the features category, these two watches are strikingly similar — both handle calls, notifications, call control, phone locating, silent and vibrating alerts, a stopwatch, and a camera remote without distinction. For the everyday smartwatch experience, they deliver an essentially equivalent toolkit, and neither includes ECG monitoring or a smart alarm, so those omissions apply equally to both.
The separating factors are few but worth noting. The Watch S4 41mm adds fall detection, a safety-oriented feature that automatically senses sudden impacts or drops and can trigger an alert — a meaningful capability for older users or those engaging in higher-risk activities. It also supports voice commands, allowing hands-free interaction that the Redmi Watch Move does not offer. Finally, the S4 benefits from faster GPS acquisition, which in practice means less standing around waiting for a signal lock before a run or outdoor session — a small but genuinely appreciated quality-of-life advantage for active users.
The Watch S4 41mm edges ahead in this category, though not dramatically so. Its additions — fall detection, voice commands, and quicker GPS lock — are all functionally useful rather than cosmetic. The Redmi Watch Move covers the core smartwatch feature set capably, making it a reasonable option for users who do not need those extras, but the S4 offers a more complete and safety-aware experience for those who do.