From the manufacturer
 
The Mammut Barryvox® avalanche transceiver not only has one of the largest receiving ranges and one of the widest safely usable search strips on the market; it really stands out in the market with its intuitive operation. Mammut knows that you will only be able to make best use of your device in an emergency if you can operate it practically with your eyes closed.
The Barryvox is a digital three-antenna avalanche beacon that is simple and easy to use with clear instruction and the ability to use the device with gloves.
 
Features
 
| Technology |  | 
Circular Receiving Field: Almost identical receiving range for X and Y antennasDisplay: Display with background lighting, very easy to read even when wearing polarized glassesAcoustic Search Guidance: Allows the rescuer to visually search the avalanche fieldReverse direction function to avoid 180° search errorsGroup test with clear instructionsVisual Interface: Shows distance, direction and number of buried subjectsDesign: Ergonomic, impact-proof and break-proof. Can be operated while wearing glovesDevice Tests: automatic self-test and function testMultiple Buried Subjects: Digital signal processing in the event of several buried subjectsAutomatic Switching From Send to Search (Auto Revert): If a rescuer does not move for 4 minutes, we assume a secondary avalanche and the device switches to SEND mode (motion-sensor controlled)Attachment: Includes highly functional Barryvox carrying systemW-Link: Additional communication channel for improved search performanceManage the device fleet via W-LinkUpdatable software   | 
| Specifications 
 |  | 
Type: Digital 3-antennaWeight (including batteries): 210gDimensions: 67 x 27 x 115mmW-Link Frequency: 916-926 MHzEN Standards: EN 300718Digital Receiving Range: 70mOperating Temperatures: -25° to +45°C / -13°F to +113°FBattery Life: Alkaline: ~300hrs SENDBatteries Included: Yes (Alkaline 3 x AAA 1.5v)Sending Frequency: 457 kHzEffective Digital Search Strip Width: 70mDigital Search Strip Width: 70mBuried Subject Marking: Mark |