✓ VERIFIED

Microsoft Band

2014–2016 · wearable

Specifications

Cpu: STMicroelectronics low-power microcontroller (undisclosed model)
Ram: max: unknown, not publicly documented · base: unknown, not publicly documented
Battery: Rated up to 48 hours mixed use (lower with GPS and always-on features active)
Display: 1.4" curved TFT color touchscreen, 320x106
Storage: base: 64 MB flash for firmware and cached data · options:
Case Sizes: Small · Medium · Large
Os Support: latest: Microsoft Health app; Microsoft discontinued the Health/Band services in 2019, bricking cloud-dependent features · shipped: Microsoft Health companion app on Windows Phone, iOS, and Android
Release Price: $199

Variants

Sizes

SmallSmallest of three clasp-adjustable band sizes.

MediumDefault retail size in most bundles.

LargeLargest clasp-adjustable size.

Upgrade paths

battery

Sealed cell, no official replacement · iFixit teardowns found the curved AMOLED-era band (Band 2) glued shut around the battery and sensor stack; the original Band is similarly sealed and considered non-repairable without destroying the flexible circuitry.

LOCKED

other

Third-party watch faces and reverse-engineered sync clients after Microsoft shut down Microsoft Health servers · When Microsoft killed the Health cloud backend in 2019, community projects (like unofficial Band sync tools) emerged to keep basic sensor logging alive without the original app.

HARD