Important Note: As we increased API level to 26, the application only works with the Android 8 (API 26) and higher. If you can not search NC CRONUS on Google play, please contact Newcon Optik. Compatible with any of NEWCON USB/Bluetooth-equipped Laser Rangefinders. NC CRONUS app allows real-time target data acquisition on mobile phones and tablets. The application provides full control over your laser rangefinder device including any custom settings and built-in calibrations. Connect your NEWCON OPTIK LRM 3500M, LRB 6K and Spotter LRF PRO to the app using Bluetooth. Communication to multiple devices from the app Dashboard.