Whether you're training indoors or outdoors, the precise data from the HRM-Pro Plus heart rate chest strap will help you test your limits and reach your goals. The HRM-Pro Plus transmits heart rate data in real time to compatible devices, fitness equipment and apps.

Technical data
- Device dimensions (L x W x D): 60 to 142 x 3 x 1.2 cm (23.5″-56.0″ x 1.2″ x 0.5″)
- Weight according to manufacturer: 52 g (1.8 ounces)
- Module size: 29.6 x 53.7 x 8.6 mm
- Length change Foldable
- Length: 60.0 to 106.0 cm (23.5 to 42.0 inches); 60.0 to 142.0 cm (23.5 to 56.0 inches) with optional extension strap
- Battery: CR2032
- Battery cover: No tools required
- Battery life: 12 months (triathlon training: 1 hour per day)
- Water resistance: 5 ATM
- Operating temperature: 32°F-104°F (0°C-40°C)
- Radio frequency/protocol: 2.4 GHz ANT wireless transmission protocol; Bluetooth® 5.0 wireless technology
- Number of simultaneously supported BLE connections: 3
- Number of ANT connections supported simultaneously: No limit
- Range: 3 m
- System compatibility: ANT+, BLUETOOTH

Technical data
- Device dimensions (L x W x D): 33.5 x 3.3 x 1.7 cm
- Weight according to manufacturer: 53 g (1.9 ounces)
- Module size: 31 x 55.5 x 14.2 mm (W x H x D)
- Battery: CR2032
- Battery cover: No tools required
- Battery life: Up to 12 months (usage: 1 hour per day)
- Water resistance: 3 ATM
- Number of simultaneously supported BLE connections: 3
- Number of ANT connections supported simultaneously: No limit
- System compatibility: ANT, BLUETOOTH
- Pairing with the Garmin Connect™ app
- Real-time transmission of heart rate via ANT® connectivity (2.4 GHz) outside of the water
- Supports heart rate variability (HRV)
- Transmits real-time heart rate data and supports HRV via Bluetooth® technology on compatible devices and apps
- Number of simultaneously supported connections

(Translated with Google Translate)