Compare Xiaomi 15T vs Xiaomi Watch S4

Xiaomi 15T
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  Xiaomi 15T Xiaomi Watch S4
Launch
Version September 2025 October 2024
Network
Technology 5G 4G
Body
Dimensions 163.2 x 78 x 7.5 mm (6.43 x 3.07 x 0.30 in) 47.3 x 47.3 x 12 mm (1.86 x 1.86 x 0.47 in)
Weight 194 g (6.84 oz) 44.5 g (1.59 oz)
SIM Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) or Nano-SIM + Nano-SIM eSIM
Design Glass front (Gorilla Glass 7i), plastic frame, glass fiber back Aluminum alloy frame, stainless steel bezel
Others IP68 dust tight and water resistant Waterproof (5ATM)
Display
Type AMOLED, 120Hz, Dolby Vision, HDR10+ AMOLED
Size 6.83 inches 1.43 inches
Resolution 1280 x 2772 pixels 466 x 466 pixels
Protection Corning Gorilla Glass 7i, Mohs level 6 Scratch/drop-proof glass
Various
Platform
Operating System Android 15, HyperOS 2 HyperOS 2
Chipset Mediatek Dimensity 8400 Ultra (4 nm)
CPU Octa-core (1x3.25 GHz Cortex-A725 & 3x3.0 GHz Cortex-A725 & 4x2.1 GHz Cortex-A725)
GPU Mali-G720 MC7
Memory
Card Slot No No
Internal 256GB 12GB RAM, 512GB 12GB RAM
Camera
Primary 50 MP, f/1.7 (wide), OIS + 50 MP, f/1.9, (telephoto), 2x optical zoom + 12 MP, f/2.2, 120Ëš (ultrawide) No
Features Leica lens, Color spectrum sensor, Ultra HDR, LED flash, HDR, panorama
Video 4K@60fps, 1080p@960fps
Selfie 32 MP 4K@30fps, 1080p@60fps
Sound
Loudspeaker Yes, with stereo speakers (with Dolby Atmos) Yes
3.5mm Jack No No
Extra 24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Comms
Wifi a/b/g/n/ac/6e, dual-band No
Bluetooth 6.0 5.3
GPS Yes Yes
NFC Yes Yes
Infrared Yes
Radio No No
USB USB Type-C 2.0 No
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Accelerometer, gyro, compass, barometer, heart rate, SpO2
Miscellaneous
Battery
Battery type 5500 mAh 486 mAh
Charging 67W wired
Misc
Colors Black, Gray, Rose Gold Black, Silver, Rainbow
Models M2424W1, M2425W1
Inside the box
Price 800 USD 140 USD
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