Google Pixel Watch 4 vs WHOOP 4.0 Sensor
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Apple Watch Series 8 Price range: KSh 50,000.00 through KSh 53,000.00
Apple Watch Series 9 Price range: KSh 45,000.00 through KSh 49,500.00
AmazFit Falcon Original price was: KSh 70,000.00.KSh 63,000.00Current price is: KSh 63,000.00.
AmazFit T-Rex Ultra Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00.
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Google Pixel Watch 4 |  WHOOP 4.0 Sensor |
|---|---|---|
| Price | Price range: KSh 44,500.00 through KSh 53,000.00 | KSh 36,000.00 |
| Display | Actua 360 AMOLED LTPO display with DCI-P3 colour, 320 ppi | — |
| Battery capacity | 41 mm: 325 mAh typical; 45 mm: 455 mAh typical | — |
| Water resistance | 5 ATM | IP68; water-resistant up to 10 m for 2 hours; swimming and showering supported, not diving |
| Processor | Qualcomm Snapdragon W5 Gen 2 with Cortex-M55 co-processor | — |
| RAM | 2 GB SDRAM | — |
| Storage | 32 GB eMMC flash | — |
| Operating system | Wear OS 6.0 | — |
| Network / cellular | 4G LTE and UMTS on LTE model | — |
| Positioning / GNSS | Dual-frequency GPS with GPS, Galileo, GLONASS, BeiDou and QZSS | — |
| Health & wellness features | Continuous heart-rate monitoring; ECG and irregular-rhythm notifications where available; SpO₂; skin temperature; HRV; cEDA body-response and stress tracking; high/low heart-rate alerts | Continuous heart rate, HRV, respiratory rate, skin-temperature variation, strain and recovery tracking; not a medical device |
Full specifications
2 of 4 products
| Specification | Google Pixel Watch 4 | WHOOP 4.0 Sensor |
|---|---|---|
| Identity & design | ||
| Brand | WHOOP | |
| Model | Google Pixel Watch 4 | WHOOP 4.0 sensor |
| Dimensions | 41 mm: 41 mm diameter × 12.3 mm high; 45 mm: 45 mm diameter × 12.3 mm high | — |
| Weight | 41 mm: 31.0 g without band; 45 mm: 36.7 g without band | — |
| Build materials | 100% recycled aluminium housing | Screen-free continuous-wear sensor housing |
| Wrist size | 41 mm — small: 130–175 mm, large: 165–210 mm; 45 mm — small: 150–185 mm, large: 165–215 mm | — |
| Strap / band | Fluoroelastomer Active Band with soft-touch coating; small and large bands included | — |
| Controls / buttons | Haptic crown; side button; touchscreen; Gen 3 premium haptics | — |
| Display | ||
| Display | Actua 360 AMOLED LTPO display with DCI-P3 colour, 320 ppi | — |
| Display protection | Custom 3D Corning Gorilla Glass 5 | — |
| Display features | 1–60 Hz responsive display; up to 3,000 nits peak; 1 nit minimum in AOD; Always-On Display | — |
| Performance & software | ||
| Processor | Qualcomm Snapdragon W5 Gen 2 with Cortex-M55 co-processor | — |
| CPU | Cortex-M55 co-processor | — |
| RAM | 2 GB SDRAM | — |
| Storage | 32 GB eMMC flash | — |
| Operating system | Wear OS 6.0 | — |
| Connectivity | ||
| Network / cellular | 4G LTE and UMTS on LTE model | — |
| SIM / eSIM | eSIM on LTE model | — |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/ax, 2.4 GHz and 5 GHz | — |
| Bluetooth | Bluetooth 6.0 | — |
| NFC | Supported | — |
| Positioning / GNSS | Dual-frequency GPS with GPS, Galileo, GLONASS, BeiDou and QZSS | — |
| Ultra Wideband (UWB) | Supported | — |
| Satellite features | Satellite SOS communication on supported LTE models and regions | — |
| Audio & communication | ||
| Speaker | Built-in speaker | — |
| Microphone | Built-in microphone | — |
| Calling | Bluetooth calling; LTE model supports cellular and supported Satellite SOS emergency communication | — |
| Sensors, health & fitness | ||
| Sensors | Compass; altimeter; red and infrared SpO₂ sensors; multipurpose electrical sensors; multi-path optical heart-rate sensor; 3-axis accelerometer; gyroscope; ambient-light sensor; cEDA skin-conductance sensor; far-field skin-temperature sensor; barometer; magnetometer | Photoplethysmography sensors and skin-temperature sensing |
| Health & wellness features | Continuous heart-rate monitoring; ECG and irregular-rhythm notifications where available; SpO₂; skin temperature; HRV; cEDA body-response and stress tracking; high/low heart-rate alerts | Continuous heart rate, HRV, respiratory rate, skin-temperature variation, strain and recovery tracking; not a medical device |
| Sleep tracking | Light, deep and REM stages; Sleep Score; sleep log and readiness insights | Automatic sleep detection, sleep duration, stages, sleep need and sleep performance |
| Sports / workout modes | Automatic activity detection and exercise tracking for running, weightlifting, tennis and other activities | Automatic and manual activity tracking |
| Training & outdoor features | On-device GPS; custom run workouts; weekly mileage; advanced run metrics and form insights; cardio load, target cardio load, readiness and personalised coaching | — |
| Safety & emergency features | Loss of Pulse Detection where available; Car Crash Detection; Emergency SOS; Fall Detection; Safety Check; Emergency Sharing; Medical ID; Satellite SOS on supported LTE models/regions | — |
| Battery & durability | ||
| Battery capacity | 41 mm: 325 mAh typical; 45 mm: 455 mAh typical | — |
| Battery life | 41 mm: up to 30 h with AOD, 48 h saver; 45 mm: up to 40 h with AOD, 72 h saver | Approximately 5 days |
| Charging | Quick Charge Dock; 41 mm: about 15 min to 50%, 25 min to 80%, 45 min to 100%; 45 mm: about 15 min to 50%, 30 min to 80%, 60 min to 100% | WHOOP 4.0 slide-on wireless Battery Pack for on-wrist charging |
| Water resistance | 5 ATM | IP68; water-resistant up to 10 m for 2 hours; swimming and showering supported, not diving |
| Durability / certifications | IP68 ingress protection; Corning Gorilla Glass 5 | — |
| Compatibility | ||
| Phone compatibility | Most phones running Android 11.0 or newer; Google Account required | Compatible iPhone or Android phone; current support recommends iOS 18+ or Android 10+ |
| Companion app | Google Pixel Watch app; Google Health app | WHOOP app |
| Colors | 41 mm: Polished Silver / Iris or Porcelain, Champagne Gold / Lemongrass, Matte Black / Obsidian; 45 mm: Satin Moonstone / Moonstone, Polished Silver / Porcelain, Matte Black / Obsidian | — |
| Additional specifications | ||
| Charging time | — | Approximately 150 minutes for the sensor; around 2 hours for the Battery Pack |
| Movement sensors | — | Accelerometer |
| Bluetooth and Wi-Fi | — | Bluetooth 4.2 or higher |
| Packing list | — | WHOOP 4.0 sensor, compatible band and WHOOP 4.0 Battery Pack |
| Smart recognition | — | Automatically recognizes 45 activity types |
| Energy, load and readiness features | — | Recovery, Strain and Sleep scores with personalized coaching |
| strap material | — | SuperKnit performance band |
| armband | — | WHOOP 4.0 band; not compatible with WHOOP 5.0 or MG |
| heart rate broadcast | — | Real-time heart-rate broadcast supported |
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