Source: Amazon.com
5. AfterShokz Trekz Titanium
> Price: $129.95
> Product type: Sports headphones
> Company: AfterShokz
Source: Amazon.com
4. Fitbit Charge 2
> Price: $129.75
> Product type: Fitness tracker
> Company: Fitbit
Source: Amazon.com
3. Fitbit Alta HR
> Price: $129.00
> Product type: Fitness tracker
> Company: Fitbit
Source: Amazon.com
2. Polar H7 Heart Rate Sensor
> Price: $72.95
> Product type: Heart rate sensor
> Company: Polar
Source: Amazon.com
1. Jaybird X3
> Price: $99.99
> Product type: Sports headphones
> Company: Jaybird
