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Smartech Fourth Frontier X2
The Frontier X2 is a chest-strap wearable combining continuous ECG-based heart monitoring with highly accurate performance tracking. Designed for comfort and precision, it delivers deeper insights into stress, recovery, heart rate variability, and physiological load.
The Frontier X2 is a chest-strap wearable that combines continuous ECG-based heart monitoring with highly accurate performance tracking. Designed for those who want deeper insight into both fitness and heart health, it captures richer cardiovascular and physiological data throughout the day.
Built for comfort and long-term wearability, the Frontier X2 helps you understand how your body responds to training, stress, and recovery. As a chest-based monitor, it offers accuracy widely regarded as the gold standard in heart-rate tracking, delivering more consistent readings than typical wrist-based wearables.
It tracks key indicators including heart rate, ECG, heart rate variability (HRV), stress response, recovery patterns, and physiological load, reflecting the overall strain placed on the body through daily activity.
With a clearer view of cardiovascular function and body readiness, the Frontier X2 supports smarter decisions around training intensity, recovery, and lifestyle, offering a more advanced and data-driven approach to wearable monitoring.
Key Features & Benefits
1. Continuous ECG-based monitoring for deeper cardiovascular insight
2. Chest-strap design delivering gold-standard accuracy and consistent data capture
3. Advanced HRV-based insights supporting VO₂ max estimation and readiness tracking
4. On-device vibration alerts based on heart rate, breathing rate, and strain to help prevent overexertion
5. Supports precise Zone 2 training and threshold-based guidance (VT1)
6. Phone-free workout recording - start sessions directly from the device and sync later via the app
7. Designed for all-day comfort with a secure, lightweight fit
The Frontier X2 is a chest-strap wearable combining continuous ECG-based heart monitoring with highly accurate performance tracking. Designed for comfort and precision, it delivers deeper insights into stress, recovery, heart rate variability, and physiological load.
The Frontier X2 is a chest-strap wearable that combines continuous ECG-based heart monitoring with highly accurate performance tracking. Designed for those who want deeper insight into both fitness and heart health, it captures richer cardiovascular and physiological data throughout the day.
Built for comfort and long-term wearability, the Frontier X2 helps you understand how your body responds to training, stress, and recovery. As a chest-based monitor, it offers accuracy widely regarded as the gold standard in heart-rate tracking, delivering more consistent readings than typical wrist-based wearables.
It tracks key indicators including heart rate, ECG, heart rate variability (HRV), stress response, recovery patterns, and physiological load, reflecting the overall strain placed on the body through daily activity.
With a clearer view of cardiovascular function and body readiness, the Frontier X2 supports smarter decisions around training intensity, recovery, and lifestyle, offering a more advanced and data-driven approach to wearable monitoring.
Key Features & Benefits
1. Continuous ECG-based monitoring for deeper cardiovascular insight
2. Chest-strap design delivering gold-standard accuracy and consistent data capture
3. Advanced HRV-based insights supporting VO₂ max estimation and readiness tracking
4. On-device vibration alerts based on heart rate, breathing rate, and strain to help prevent overexertion
5. Supports precise Zone 2 training and threshold-based guidance (VT1)
6. Phone-free workout recording - start sessions directly from the device and sync later via the app
7. Designed for all-day comfort with a secure, lightweight fit
Ref: R04619553
What’s in the box FX2 device, Chest strap, Charging wire & user manual
Color Blue/Black
Color Blue/Black
UK Delivery
- Selfridges+ UK:
unlimited deliveries for a year£10.00 - Standard delivery£6.95
- Nominated day - order by 22:00£9.95
- Timed delivery£10.95
International Delivery
Sorry, this product is unavailable for International Delivery
Complimentary UK Click & Collect
Enjoy delivery to your chosen store, on a day that suits you. Order until 10pm for next day collection.
Complimentary returns
It's ok if you change your mind - we offer a 14-day returns policy from the day you purchased your item in store or if you ordered the item online, just let us know within 14 days from the day you received or collected your order and you will have a further 14 days from notifying us to return it. Exceptions do apply, we unfortunately can't accept returns on all items.
Please read our terms & conditions to find out more.
UK
£10.00
- Unlimited UK timed, nominated and standard delivery
- Next day UK delivery (if ordered by 10pm UK time)
- Complimentary returns
- Valid for 12 months from the day you subscribe or from the day you renew your subscription
GLOBAL
£75.00
- Unlimited UK timed, nominated day and standard delivery on orders over £100
- Unlimited worldwide deliveries subject to minimum order values
- Minimum order value of £100 (or local currency equivalent) when shipping to: Austria, Belgium, Bulgaria, Canada, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Guernsey, Hong Kong, Hungary, Ireland, Italy, Jersey, Kuwait, Latvia, Lithuania, Luxembourg, Macau, Malta, Netherlands, Poland, Portugal, Qatar, Romania, Saudi Arabia, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, Taiwan, Thailand, UAE, UK, USA
- Minimum order value of £300 (or local currency equivalent) to all other Selfridges delivery destinations. Check applicable countries in our terms & conditions
- Valid for 12 months from the day you subscribe or from the day you renew your subscription