Xiaomi Redmi Band 4 Officially Launches

Xiaomi Launches Redmi Band 4 in China With 21-Day Battery Life

Xiaomi released its latest entry-level fitness tracker, the Redmi Band 4, on October 20, 2026, in China. The smartband arrives as the successor to the Redmi Band 3 released in 2024, hitting retail channels without a major launch event. Xiaomi quietly rolled out the device for entry-level smartband seekers wanting a stylish fitness tracker with capable sports and health monitoring features, offering continuous heart rate tracking alongside its other tools. Seemingly compatible with third-party straps, the hardware allows users to personalize their device.

Priced at 169 yuan (approximately 25 US dollars or Rp450,000), the device maintains its position in the affordable segment while introducing moderate design and hardware tweaks. The most notable hardware improvement is the extended battery life, which now reaches up to 21 days on a single charge compared to the 18-day capacity of its predecessor, though actual longevity depends on how intensively the user operates the smartband.

Redmi Band 4 features a 1.47-inch TFT screen

The Redmi Band 4 features a unibody build with a metal-textured frame, alongside a 2.5D curved protective glass over its display. Redmi provides two daily strap color options. The device measures its visuals via a 1.47-inch TFT screen running at 172 x 320 pixels with a 60 Hz refresh rate and a peak brightness of 450 nits, which is bright enough for outdoor use under direct sunlight and matches the display specifications of its predecessor.

Wearable supports 50 distinct sports modes

Beyond basic timekeeping and step counting, the wearable supports 50 distinct sports modes covering activities like running, cycling, and table tennis. The tracker carries a 5 ATM water resistance rating, allowing for use in shallow water environments such as swimming pools or beaches. Users can also receive message notifications, set alarms, and swap watch faces, while users in China gain integration with WeChat and Alipay QR code payment systems.

Frequently Asked Questions About Redmi Band 4

What is the price of the Redmi Band 4?

The Redmi Band 4 sells for 169 yuan in China, which translates to roughly 25 US dollars or Rp450,000.

How long does the battery last on a single charge?

The device offers a maximum battery life of up to 21 days, improving upon the 18-day limit found on the previous model.

Is the Redmi Band 4 waterproof?

The fitness tracker includes a 5 ATM water resistance rating, making it suitable for shallow-water activities like swimming.

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