Walker&';s Shotsync Bt Wristband Shot Timer Dual shot detection using recoil and sound;Built-in microphone and accelerometer sensors;Adjustable par timer;Integrated countdown timer;Supports multiple firearm profiles;Bluetooth 5.2 BLE connectivity;Compatible with Bluetooth hearing protection;High sampling rate: 1.6 kHz;Battery life up to 5.5 hours;Recharge time approx. 60 to 70 minutes;Compatible with Walker&';s Link Apptable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 4000 Product Group Code: 4000C Product Sub Group 1: 4000C5 Inactive: No