The Kestrel Elite Weather Meter with Applied Ballistics is referred to as the Kestrel 5700 Elite. With the addition of the Bluetooth Kestrel LINK functionality, you'll want to download the Kestrel LiNK Ballistics app to your smart phone to load your guns / ammo to the meter. The Kestrel Meters with Bluetooth include the software necessary to communicate wirelessly at a range of up to 100 feet with a clear line of site (walls or obstacles will effect this range).Kestrel 5700 Elite Weather Meter with Applied Ballistics with integrated Bluetooth technology offer the ultimate in portable and accurate environmental data. Now, both real-time and logged data can be transferred wirelessly and automatically to a MAC/PC, or Smartphone or iPhone. It also connects via LiNK to the Bushnell CONX Range Finder where you can view results from the AB Kestrel right on your Range Finder. There will be more rangefinders and scopes down the line that will connect directly with the Kestrel meters.Applied Ballistics features :Custom Drag CurvesG1 and G7 supportBetter PC application for ease of building libraryCrosswind Jump: truing in winds without it can give you an errant MVIf you calibrate in one environment and move to a drastically different environment, the device will adjust automaticallyAble to export the windage, elevation, wind speed via BT to an external deviceGeneral Features :Bluetooth LINK to Smartphones / Mobile / Android / IOSIncludes 1 AA batteryBattery door is in the back, sealed away from the motherboardImproved high resolution screen for any lighting (even sunlight)Intuitive user-interface screen navigationEnglish, French, German, SpanishScratch and breakage-resistant windowAll meters include both options of Red (NV - Night Vision) & White backlights.Slightly bigger, fits same cases.