Battery life
- Apple Watch Series 8
- Up to 18 hours per charge
- WHOOP Life
- Up to 14+ days
Wearable comparison
Compare battery life, health tracking, display and fit.
01Selected ![]() Apple Watch Series 8
KSh 50,000In Stock | 02 ![]() WHOOP Life
KSh 55,500In Stock |
|---|







The Apple Watch Series 8, a smartwatch, runs watchOS built around the iPhone, has built-in GPS for runs without your phone and takes calls from the wrist, though it works only with an iPhone, while the WHOOP Life, a screenless tracker you read in the WHOOP app, lasts much longer between charges (14 days vs 18 hours) and works with Android phones and iPhones, though it needs a WHOOP membership.
The main differences to help you choose.
| Priority | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Battery life | Up to 18 hours per charge | Up to 14+ days |
| Portability | 31.9 g | About 27.3 g |
| Display | OLED display | Screenless tracker |
| Software | watchOS 9.0 | WHOOP with Life membership |
| Connections | Wi-Fi 4, Bluetooth 5.3 | Bluetooth |
| Water resistance | 50 m | IP68 water and dust resistance |
| Sensors | Blood oxygen sensor, electrical heart sensor | PPG heart-rate sensor, accelerometer |
| Sleep tracking | Sleep duration and sleep stages | Light, REM and deep sleep |
| Charging | Magnetic fast charging to USB-C cable | Wireless PowerPack, compatible with USB-C Basic Charger |
| Health & wellness features | ECG app, Blood Oxygen app where available | Continuous heart rate, HRV |
Tick a topic above to see how each product answers it.
Explore the full specifications, section by section.
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Display | Always-On Retina LTPO OLED | Screenless tracker |
| Screen resolution | 41mm: 352 × 430 pixels; 45mm: 396 × 484 pixels | Not applicable |
| Display protection | Ion-X glass (aluminum); sapphire crystal (stainless steel) | — |
| Display features | 1000 nits (peak) | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Network / cellular | GSM / HSPA / LTE | — |
| SIM / eSIM | eSIM | — |
| Wi-Fi | Wi-Fi 802.11 b/g/n, dual-band | — |
| Bluetooth | 5.3, A2DP, LE | — |
| NFC | Supported; Apple Pay | — |
| Positioning / GNSS | GPS, GLONASS, GALILEO, QZSS, BDS | Connected smartphone GPS; no built-in GPS |
| Ultra Wideband (UWB) | Ultra Wideband (UWB) support | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Brand | Apple | WHOOP |
| Model | Apple Watch Series 8 | WHOOP Life |
| Announced | 2022, September 07 | — |
| Dimensions | 41mm: 41 × 35 × 10.7 mm; 45mm: 45 × 38 × 10.7 mm | 34.7 × 24 × 10.6 mm |
| Weight | 41mm: aluminum GPS 31.9 g, GPS + Cellular 32.2 g, stainless steel 42.3 g; 45mm: aluminum GPS 38.8 g, GPS + Cellular 39.1 g, stainless steel 51.5 g | Approximately 27.3 g |
| Build materials | Aluminum or stainless-steel case; ceramic and sapphire crystal back | Matte-black sensor housing; brushed-metal detailing; conductive ECG clasp |
| Wrist size | 41mm: 130–200 mm; 45mm: 140–245 mm | — |
| Controls / buttons | Digital Crown with haptic feedback; side button | — |
| Strap / band | — | SuperKnit Luxe with ECG-compatible conductive clasp |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Processor | Apple S8 SiP | — |
| CPU | 64-bit dual-core | — |
| GPU | PowerVR | — |
| RAM | 1GB | — |
| Storage | 32 GB | — |
| Operating system | watchOS 9.0, upgradable to watchOS 26.6 | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Speaker | Supported | — |
| Microphone | Supported | — |
| Calling | Bluetooth calling; cellular calling on GPS + Cellular models | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Sensors | Blood oxygen sensor; electrical heart sensor; third-generation optical heart sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high-dynamic-range gyroscope; ambient light sensor | PPG heart-rate sensor; accelerometer; skin-temperature sensor; ECG-ready contact pads |
| Health & wellness features | ECG app; Blood Oxygen app where available; high and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | Continuous heart rate; HRV; respiratory rate; skin temperature; Recovery; Strain; Healthspan; Health Monitor; Stress Monitor |
| Sleep tracking | Sleep duration and sleep stages | Light, REM and deep sleep; duration; performance; consistency; sleep need |
| Sports / workout modes | Workout app with multiple workout types and automatic workout detection | Automatic and manual activity tracking |
| Training & outdoor features | Pace and heart-rate zones; compass waypoints and backtrack | — |
| Safety & emergency features | Emergency SOS; international emergency calling; Fall Detection; Crash Detection | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Battery life | Up to 18 hours normal use | Up to 14+ days |
| Charging | Magnetic fast charging to USB-C cable | Wireless PowerPack; compatible with USB-C Basic Charger |
| Water resistance | 50 m; swimproof | IP68; up to 10 m for 2 hours |
| Durability / certifications | IP6X dust resistance | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Phone compatibility | iPhone 8 or later; iOS 16 or later | iOS 18 or later; Android 11 or later; Bluetooth 5.0+ for ECG and Blood Pressure Insights |
| Companion app | Apple Watch app on iPhone | WHOOP with Life membership |
| Colors | Graphite, Silver, Gold | — |
| Specification | Apple Watch Series 8 | WHOOP Life |
|---|---|---|
| Pixels per inch | 326 ppi | — |
| Peak brightness | Up to 1,000 nits | — |
| Cover / touchscreen | Supported | — |
| Release status | Available. Released 2022, September 16 | — |
| Model numbers | A2773, A2775, A2772, A2774, A2857, A2858, watch6,16, watch6,17 | — |
| Card slot | No | — |
| Camera | No | — |
| 3.5 mm headphone jack | No | — |
| USB | No | — |
| Radio | No | — |
| 2G bands | GSM 850 / 900 / 1800 / 1900 | — |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK; HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada | — |
| 4G bands | 1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK; 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada | — |
| Network speed | HSPA, LTE | — |
| SAR (US) | 0.31 W/kg (head) 0.55 W/kg (body) | — |
| SAR (EU) | 0.31 W/kg (head) 0.55 W/kg (body) | — |
| Additional hardware features | Temperature sensing (0.01˚ accuracy) | — |
| Battery type | Rechargeable lithium-ion | — |
| Charging time | — | Approximately 120 minutes |
| Movement sensors | — | Accelerometer |
| Bluetooth and Wi-Fi | — | Bluetooth |
| Packing list | — | WHOOP MG; SuperKnit Luxe band; Wireless PowerPack |
| Smart recognition | — | Automatic activity detection |
| Energy, load and readiness features | — | Recovery; Strain; Sleep scores; personalized coaching |
These products have the same published specifications.
For most buyers the WHOOP Life is the better buy; the Apple Watch Series 8 makes sense if you want the time, notifications and workout stats on your wrist.
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