Display Illuminated Digital Display with Distance, Direction and Battery IndicationsSearch Features 60 meter Circular Range for Extended, Symmetrical Search Area Mark Function for Multiple Burial Scenarios Maximum Range – 60 meters Search Strip Width – 60 metersBattery Alkaline or Lithium AAA Batteries (3) – 400+ hours in "Send" mode with Alkaline batteriesCase Harness-style carrying pouch includedAdditional Features Housing with soft-touch contact points for improved ergonomics and handling Bluetooth Functionality – Allows user to manage settings, software updates and optimization from the PIEPS mobile app. Three antennas Digital Signal Processor to pick up beacons transmitting drifted signals Integrated inclinometer for easy slope-angle assessment Continuous carrier mode for use with older, analog beacons Reliable direction and distance indication from the point of original signal Compatible with TX600 and iProbe for added search capabilities Frequency – 457 kHz (EN300718) Dimensions – 115 x 75 x 38 mm (4.5 x 3 x 1.1 in) Beacons Require Training – Wearing an avalanche beacon is no guarantee of safety in avalanche terrain. We recommend that backcountry travelers take an AIARE Level One class or the equivalent, and practice the skills they learn there regularly with their partners. Black Diamond Guide BT Avalanche Beacon