Garmin D2 MACH 1 Schwarz/Titanium mit QuickFit-Titan-Armband... for $1,624 for sale from a Trusted Seller on Chrono24
Coospo Hw706 Sensor For Garmin Wahoo Bike Bluetooth 4.0 Ant+ Computer Heart Rate Monitor Armband Fitness Outdoor Cycling Running - Bicycle Computer - AliExpress
TUSITA Running Armband Compatible with Garmin Bike GPS Computer, 4.7"-6.9" Phones - Universal Detachable Phone Mount Holder + Sport Arm Band for iPhone 13/12/11 Pro MAX Samsung Galaxy Note20 S21