Featuring Sig's BDX technology, the Kilo1800BDX is one of the world's most advanced laser rangefinders. It is BDX Ballistic Data Xchange capable, providing your BDX riflescope with an automatic illuminated holdover dot through Bluetooth pairing. The range finder utilizes a SpectraCoat anti-reflection coatings, LightWave DSP Technology, an advanced OLED display provides a smaller, extremely precise targeting circle along with ballistic info including holdover, and HyperScanTM which provides four (4) range updates per second in scan mode while RangeLock reports last range result when ranging distant targets. You can also download the free BDX App for iOS or Android to setup ballistic profiles and synchronize custom profiles to your Kilo for exact ballistic solutions. This is a class 1M laser.