| Availability: | Ships 1-2 days | 
This premium heart rate strap transmits real-time heart rate data over ANT+ connectivity and BLUETOOTH Low Energy technology, giving you more options to train indoors, outdoors or even online.
Unit Dimensions (WxHxD): 2.4 x 1.3 x 0.4” (62 x 34 x 11mm) 
Strap Length: Adjustable from 25" to 52" (63.5 cm to 132 cm) 
Weight: 1.9 oz (54.4 g) 
Water Rating: 1 ATM
Battery: User-replaceable size CR2032 (3 volts) 
Battery Life: Up to 3.5 years (based on average use of 1 hour per day) 
Operating Temperature: 23F to 122F (-5C to 50C) 
Radio Frequency/Protocol: 2.4 GHz ANT wireless communications protocol; BLUETOOTH® Wireless Technology 5.0
Range: 3 m
System Compatibility: ANT+, BLUETOOTH