# What is the lightest and most portable heart rate monitor chest strap? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the lightest and most portable heart rate monitor chest strap?

## Products

### Wahoo Fitness TRACKR HEART RATE (Chest Strap Monitor)
```yaml
product: wahoo-fitness-trackr-heart-rate-chest-strap-monitor
brand: Wahoo Fitness
price_gbp: 74.97
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
battery_life: Over 100 Active Hours
compatibility: ANT+ and up to three simultaneous Bluetooth connections; iOS - iPhone, iPad, Mac, Android devices, Windows
waterproof_rating: IPX7
```

- **Price:** £74.97 [^1]
- **Summary:** The Wahoo TRACKR HEART RATE is a rechargeable chest strap monitor that provides real-time heart rate data with ANT+ and up to three simultaneous Bluetooth connections. It is rated IPX7 for submersion up to 1 meter for 30 minutes and is designed for active training rather than swim use.
- **Ideal For:** It is light (39 g with strap) and has over 100 active hours battery life, making it more portable for frequent training without needing coin-cell replacements.
- **Additional Sources:** [^2], [^3], [^1], [^2], [^3]

### Garmin HRM-Pro Plus (HRM-Pro Plus Heart Rate Monitor Belt) - 010-13118-00
```yaml
product: garmin-hrm-pro-plus-hrm-pro-plus-heart-rate-monitor-belt-010-13118-00
brand: Garmin
price_gbp: 86.63
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
battery_life: Up to 1 yr. at 1 hr./day
compatibility: ANT+ and Bluetooth Low Energy
waterproof_rating: 5 ATM
```

- **Price:** £86.63 [^4]
- **Summary:** The Garmin HRM-Pro Plus is a dual-transmission chest strap that sends real-time heart rate to compatible devices over ANT+ and Bluetooth Low Energy. It supports features like heart rate variability, running dynamics, and indoor pace and distance when used with compatible Garmin devices. It uses a tool-free CR2032 battery and is rated 5 ATM for water resistance.
- **Ideal For:** At 52 g and with a 5 ATM water resistance rating, the HRM-Pro Plus is a lightweight chest-strap option designed to be durable and portable for gym and outdoor training.
- **Additional Sources:** [^5], [^4], [^5]

---
## References & Sources
[^1]: Wahoo Fitness, accessed 2026-06-28. https://www.wahoofitness.com/devices/heart-rate-monitors/trackr-heart-rate-buy
[^2]: Zwift, accessed 2026-06-28. https://us.zwift.com/products/wahoo-trackr-heart-rate-monitor-chest-strap
[^3]: Tri Town Bicycles, accessed 2026-06-28. https://www.tritownboise.com/wahoo-fitness-trackr-heart-rate-monitor.html
[^4]: Worldwide Cyclery, accessed 2026-06-28. https://worldwidecyclery.com/products/garmin-hrm-pro-plus-heart-rate-monitor-black
[^5]: Sportsmith, accessed 2026-06-28. https://sportsmith.com/garmin-hrm-pro-plus/product/334607/