Polar Heart Rate Monitor Optical heart rate sensor, Bluetooth connection, iOS & Android compatible - Brand: POLAR - Model Name: VERITY SENSE - Included: USB charging adapter, storage pouch - Functions: Optical heart rate sensor, Bluetooth connection - Compatible OS: iOS and Android - Color: Black Purchased in September 2023 and used only once or twice a month for mountain trips. Selling because I no longer use it. The strap shows some signs of use, but the main unit is in good condition as I took good care of it. Replacement straps are available for purchase. (I used it connected to Garmin and Karos devices) Please refrain from price negotiations. Thank you for looking.