Battery life
- Garmin CIRQA Smart Band
- Up to 10 days
- WHOOP 4.0 Sensor
- Approximately 5 days
Wearable comparison
Compare battery life, health tracking, display and fit.
01Selected ![]() Garmin CIRQA Smart Band
KSh 40,000In Stock | 02 ![]() WHOOP 4.0 Sensor
KSh 36,000In Stock |
|---|






Of these two screenless trackers, the Garmin CIRQA Smart Band is the stronger choice: it lasts longer between charges (10 days vs 5 days) and is swimproof to 50 m, while the WHOOP 4.0 Sensor only costs KSh 4,000 less.
The main differences to help you choose.
| Priority | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Battery life | Up to 10 days | Approximately 5 days |
| Display | Screenless smart band | Screenless tracker |
| Connections | Bluetooth | Bluetooth 4.2 |
| Water resistance | 5 ATM | IP68 water and dust resistance |
| Sensors | Optical heart-rate sensor, Pulse Ox sensor | PPG heart-rate sensor, accelerometer |
| Sleep tracking | Advanced sleep tracking, sleep score | Light, REM and deep sleep |
| Charging | Garmin proprietary plug charger | WHOOP 4.0 slide-on wireless Battery Pack |
| Companion app | Garmin Connect | WHOOP |
| Sports / workout modes | 80+ activities | Automatic and manual activity tracking |
| Strap / band | ComfortFit fabric, 14 mm quick-release pins | WHOOP 4.0 SuperKnit |
| Packing list | Smart band, USB-C charging/data cable | WHOOP 4.0 sensor, compatible band |
Tick a topic above to see how each product answers it.
Explore the full specifications, section by section.
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Display | Screenless smart band | Screenless tracker |
| Screen resolution | Not applicable | Not applicable |
| Display protection | — | — |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Bluetooth | Bluetooth; ANT+ | — |
| Positioning / GNSS | Connected smartphone GPS | Connected smartphone GPS; no built-in GPS |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Brand | Garmin | WHOOP |
| Model | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
| Announced | July 21, 2026 | — |
| Dimensions | 27 × 47 × 9 mm | — |
| Weight | Module: 14.8 g; with S-M band: 20.7 g; with L-XL band: 21.2 g | — |
| Build materials | Fibre-reinforced polymer | Screenless sensor housing |
| Wrist size | S-M: 120–200 mm; L-XL: 145–240 mm | — |
| Strap / band | ComfortFit fabric; 14 mm quick-release pins; 24 mm band width | WHOOP 4.0 SuperKnit |
| Controls / buttons | Hardware activity button | — |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Storage | 128 MB | — |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Sensors | Optical heart-rate sensor; Pulse Ox sensor; skin-temperature sensor; accelerometer | PPG heart-rate sensor; accelerometer; skin-temperature sensor |
| Health & wellness features | Continuous heart rate; HRV; Pulse Ox; Body Battery; stress; skin temperature; respiration; menstrual-cycle and pregnancy tracking | Continuous heart rate; HRV; respiratory rate; skin temperature; Recovery; Strain |
| Sleep tracking | Advanced sleep tracking; sleep score; sleep coach; naps; breathing variations | Light, REM and deep sleep; duration; performance; consistency; sleep need |
| Sports / workout modes | 80+ activities | Automatic and manual activity tracking |
| Training & outdoor features | Training readiness; VO₂ max; fitness age; workout benefit; recovery time | — |
| Safety & emergency features | LiveTrack with connected smartphone | — |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Battery life | Up to 10 days | Approximately 5 days |
| Charging | Garmin proprietary plug charger | WHOOP 4.0 slide-on wireless Battery Pack |
| Water resistance | 5 ATM | IP68; up to 10 m for 2 hours |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Phone compatibility | iPhone and Android | Android 10 or later; iOS 18 or later recommended |
| Companion app | Garmin Connect | WHOOP |
| Specification | Garmin CIRQA Smart Band | WHOOP 4.0 Sensor |
|---|---|---|
| Packing list | Smart band; USB-C charging/data cable; documentation | WHOOP 4.0 sensor; compatible band; WHOOP 4.0 Battery Pack |
| Smart recognition | Automatic activity detection | Automatic activity detection |
| Charging time | — | Approximately 150 minutes |
| Movement sensors | — | Accelerometer |
| Bluetooth and Wi-Fi | — | Bluetooth; phone Bluetooth 4.2 or later |
| Energy, load and readiness features | — | Recovery; Strain; Sleep scores; personalized coaching |
| strap material | — | SuperKnit |
These products have the same published specifications.
For most buyers the Garmin CIRQA Smart Band is the better buy; the WHOOP 4.0 Sensor makes sense if price matters most, as it costs less.
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