Hello, Color! 

                     Accurate Data and High Compatibility

                     Navihood Ten Years' Algothrim Accumulation & 

                     Third-generation ECG hear rate measurement Technology 

                     Million-level User's Sampling Data 

                     Light and Eligant, 

                     Only 10g Weight

                     Lighter than 4pcs A4 papers.

                     Measure and monitor  

                     the heart rate data 

                     when you ride,run and hike. 

                     Narrow Frame Design 

                     Prevent the muscles from squeezing the transmitter

                      which leads to loosening or falling off during strenuous exercise.

                     Bearing Platform Design 

                     The transmitter and strap are integrated into one piece 

                     after being buckled in.High-gloss metal large chrome buckle 

                     increases the contact area and ensures reliable signal.

                     Using female buckles

                     imported from Germany.

                     The bite force can reach 10.3N(Newton).

                     Compatible wtih  

                     Bluetooth BLE5.0 and ANT+

                     BLE5.0 and ANT+

                     Navihood, Zwift, Garmin Connect

               Compatible with below GPS Bike Computer  

               headunits and more.

               Navihood，GARMIN，WAHOO，BRYTON，GARMIN，SUNNTO，Huawei GT

                     LED Indicator Light

                     Slow Flash：A3 HRM is connecting with gps bike computer or APP via bluetooh.

                     Stays on. A3 HRM is connected with gps bike computer or APP successfully.

                     Quick Flash or the speed data is unstable. Please replace it with one new battery due to its low power.

                     Premium Quality with 

                     High-end Components

                     Fully gold plated PCBA with reliable signal Easy to use, Endurable to use

                     The belt fabric and the electrode are bonded 

                     using the world's leading glue spraying and 

                     hot pressing technology.

                     Can withstand 1000 hours of level-7 salt spray test 

                     and is not afraid of being soaked in summer sweat.

                     Navihood pursues the 

                     premium in every detail.

                     We additionally equip one small detaching tool with the sensor. lt is very 

                     Hconvinient to detach the battery cover in the back without scratching the surface.

                     Classic Red and 

                     Black Combination

                     ①. Use the opening flake that comes with the package to insert the battery cover.

                     ②. Rotate the battery cover to the unlocking position

                     ③. Use the other side of the unlocking film to pull out the battery cover and remove it.

                     ④. Remove the battery insulation film

                     ⑤. Reinstall the battery cover

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                     Product Spec. 

                     Product: Navihood A3 Heart Rate Monitor

                     Weight: 10g

                     Battery: CR2032 Replaceable Coin Cell

                     Waterproof: IPX6 

                     Size: 28*62mm