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Our smallest and lightest module fits within the width of the strap. Its soft, rounded edges and covered seams make the strap super-comfortable out of the water, too.
HRM-Tri also has an accelerometer in the module that measures torso movement to calculate 3 running metrics:2
Cadence — the number of steps per minute. It displays the total steps (right and left combined).
Vertical oscillation — the bounce in your running motion. It displays the vertical motion of your torso (measured in centimeters). HRM-Tri is compatible with several other fitness products but will only display heart rate when paired.
Ground contact time — the amount of time in each step that your foot spends on the ground while running (measured in milliseconds).
Unit dimensions (LxWxD): 60.0 - 142.0 x 3.0 x 1.2 cm
Weight: 2.1 oz (59 g)
Module size: 29.4 x 51.4 x 8.5 mm
Module weight: 49 g
Size adjustment: Bi-fold
Sizing range: (60.0 - 142.0 cm
Battery life: 10 months (Tri training 1 hour per day)
Water rating: 5 ATM
ANT+® heart rate: yes
Supports heart rate variability and advanced heart rate features: yes
2.4 GHz ANT wireless communication protocol: yes
Running dynamics: yes
Stores and forwards heart rate: yes
Swim interval heart rate statistics: yes
Non-slip design for pool swimming: no
Pool chemical resistent: no
Compatible Garmin Devices
Fenix 3 HR
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.