Compare / Xiaomi Watch S4 41mm vs Xiaomi Redmi K100
Xiaomi Watch S4 41mm vs Xiaomi Redmi K100
A side-by-side comparison of the Xiaomi Watch S4 41mm and the Xiaomi Redmi K100, covering display, chipset, memory, camera, battery and build.
Overview
Specifications
Xiaomi Watch S4 41mm
- Technology
- No cellular connectivity
- 2G bands
- N/A
- 3G bands
- N/A
- 4G bands
- N/A
- GPRS
- No
- EDGE
- No
Xiaomi Redmi K100
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800 / 1900
- 3G bands
- HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
- 4G bands
- 1, 3, 4, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 48, 66
- 5G bands
- 1, 3, 5, 7, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
- Speed
- HSPA, LTE, 5G
Xiaomi Watch S4 41mm
- Announced
- 2025, June 26
- Status
- Available. Released 2025, June 26
Xiaomi Redmi K100
- Announced
- 2026, October 27
- Status
- Available. Released 2026, October 27
Xiaomi Watch S4 41mm
- Dimensions
- 41.2 x 41.2 x 9.5 mm (1.62 x 1.62 x 0.37 in)
- Weight
- 32 g (1.13 oz)
- Build
- Stainless steel bezel and frame
- SIM
No
Waterproof (5ATM)
Xiaomi Redmi K100
- Dimensions
- 162.9 x 77.9 x 8.7 mm (6.41 x 3.07 x 0.34 in)
- Weight
- 234.5 g (8.29 oz)
- Build
- Glass front, aluminum frame
- SIM
Nano-SIM + Nano-SIM
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Xiaomi Watch S4 41mm
- Type
- AMOLED, 1500 nits (HBM), 2200 nits (peak)
- Size
- 1.32 inches
- Resolution
- 466 x 466 pixels (~320 ppi density)
- Protection
- Scratch/drop-proof glass
Xiaomi Redmi K100
- Type
- AMOLED68B colors165HzDolby VisionHDR VividHDR10+3500 nits (HBM)9000 nits (peak)*
- Size
- 6.83 inches, 114.5 cm2 (~90.3% screen-to-body ratio)
- Resolution
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
* Measured at an isolated spot during video playback only
Xiaomi Watch S4 41mm
- OS
- HyperOS 2
Xiaomi Redmi K100
- OS
- Android 17, HyperOS 4
- Chipset
- Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
- CPU
- Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
- GPU
- Adreno 840
Xiaomi Watch S4 41mm
- Card slot
- No
- Internal
- Unspecified
Xiaomi Redmi K100
- Card slot
- No
- Internal
256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
UFS 4.1
Xiaomi Watch S4 41mm
Not listed for this device
Xiaomi Redmi K100
- Dual
50 MP, f/1.7, (wide), 1/1.55", 1.0µm, PDAF, OIS
8 MP, f/2.2, 15mm, 120˚ (ultrawide), 1/4.0", 1.12µm
- Features
- Color spectrum sensor, LED flash, HDR, panorama
- Video
- 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, HDR10+
Xiaomi Watch S4 41mm
Not listed for this device
Xiaomi Redmi K100
- Single
- 20 MP, (wide), 1/2.0", 0.8µm
- Video
- 1080p@30/60fps
Xiaomi Watch S4 41mm
- Loudspeaker
- Yes
- 3.5mm jack
- No
Xiaomi Redmi K100
- Loudspeaker
- Yes, with stereo speakers (with Dolby Atmos)
- 3.5mm jack
No
Tuned by Bose
24-bit/192kHz Hi-Res & Hi-Res wireless audio
Xiaomi Watch S4 41mm
- WLAN
- No
- Bluetooth
- 5.4, A2DP, LE
- Positioning
- GPS, GLONASS, GALILEO, BDS, QZSS
- NFC
- Yes (market/region dependent)
- Radio
- No
- USB
- No
Xiaomi Redmi K100
- WLAN
- Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
- Bluetooth
- 5.4, A2DP, LE, LHDC 5.0, ASHA, Auracast
- Positioning
- GPS (L1+L5)BDS (B1I+B1c+B2a)GALILEO (E1+E5a)QZSS (L1+L5)NavICGLONASS
- NFC
- Yes
- Infrared port
- Yes
- Radio
- No
- USB
- USB Type-C 2.0, OTG
Xiaomi Watch S4 41mm
- Sensors
- Accelerometergyrocompassbarometerheart rateSpO2thermometer (skin temperature)
Xiaomi Redmi K100
- Sensors
- Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Xiaomi Watch S4 41mm
- Type
- Li-Po 320 mAh
Xiaomi Redmi K100
- Type
- Si/C Li-Ion 10000 mAh
- Charging
100W wired, PD3.0, QC3+, 100W PPS
27W reverse wired
Bypass charging
Xiaomi Watch S4 41mm
- Colors
- Black, Green, White, Gold
- Models
- M2502W1
- Price
- About 120 EUR
Xiaomi Redmi K100
- Colors
- Black, White, Green
- Price
- About 470 EUR
Xiaomi Watch S4 41mm
- No
Xiaomi Redmi K100
Not listed for this device
How the Xiaomi Watch S4 41mm and Xiaomi Redmi K100 differ
- The Xiaomi Redmi K100 has a larger battery, 10000 mAh against 320 mAh on the Xiaomi Watch S4 41mm.
- The Xiaomi Redmi K100 has the bigger screen, 6.83 inches against 1.32 inches.
- The Xiaomi Redmi K100 is the newer of the two, released in October 2026.